MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristics indicate it functions as a link farm, directing users to compromised WordPress upload storage and other disposable hosting sites. A key finding is the 'Browser extension / update installation lure' heuristic, suggesting the document's primary goal is to trick users into installing malicious software by pretending to be a necessary update or plugin. No scripts were extracted, but the overall structure and heuristics point to a social engineering attack designed to facilitate the download of a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9910
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://etasystem.net/userfiles/files/punototav.pdf In PDF document text
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aaf7ff63443---4201482056.pdfIn PDF document text
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/160b87fa3eff1d---54818704479.pdfIn PDF document text
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160823df634921---xuratukowik.pdfIn PDF document text
- https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4b931b9fd---bijigapanasafezonibasegu.pdfIn PDF document text
- http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb760aa278---60930122548.pdfIn PDF document text
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c49ccabfa46---68744869978.pdfIn PDF document text
- http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/f68up4flb4n0sl8cvhjs4h89o2/tebavixilefopigosavekigax.pdfIn PDF document text
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1385db25a---38584662458.pdfIn PDF document text
- https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/futecf1fasvr8i9em9n87k8jm7/24680488516.pdfIn PDF document text
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7e15736ff---vesubonufipaguxazitotut.pdfIn PDF document text
- http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606f48b06b0a8---guzegezefiwulavugovoduga.pdfIn PDF document text
- https://fizjolech.pl/userfiles/file/80578192372.pdfIn PDF document text
- https://giasusinhvien.net/upload/files/xozapafizipebiv.pdfIn PDF document text
- https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/8002hg7vst1gn8i73skqp8kmg0/fumajiz.pdfIn PDF document text
- http://eperon-kochersberg.com/img_db/56472270094.pdfIn PDF document text
- http://megat.pl/uploaded/fck_files/file/zepumajukixorupoz.pdfIn PDF document text
- https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/22pujgc688j6isgr9d09vnmt5a/bufiwawoduzidojop.pdfIn PDF document text
- http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/9pvumgvkm02ec606k2ai6qrp02/59229024378.pdfIn PDF document text
- https://combrooncom.com/contents//files/17740406239.pdfIn PDF document text
- http://imbirimbir.ru/files/sidujomusitosofa.pdfIn PDF document text
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/ee2bc8c0f4215eca1620ab0bbfabc56d/jejofufonuk.pdfIn PDF document text
- https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/uk95sr844cgcrkfe69cstrihnh/bizudulejowi.pdfIn PDF document text
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/16076337561554---71445307548.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=frozen+2+full+movie+download+with+english+subtitlesPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f8f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8F2 | 16952 bytes |
SHA-256: 43bee7f642ddd6c35bc5e9e43101ac2c04d3d20eb1cd0e09dc7601744de9d9e0 |
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font_01_sfnt_off0001251c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1251C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00013d2d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13D2D | 18432 bytes |
SHA-256: 0caaf5938141e8a0d29c5a156d89198fdd900976c8c5c1a73a00bb1bc56f85e4 |
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font_03_sfnt_off00015a49.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15A49 | 11348 bytes |
SHA-256: 77be709fbb504fae68ece0269d4673144623d81688757bd25b2a07bd720efc0f |
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