MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable domains, suggesting a phishing or malware distribution scheme. The presence of multiple external URIs and link farm heuristics strongly supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9915
Heuristics 6
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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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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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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 https://synerhu.ru/uplcv?utm_term=cambridge+c1+exam+practice+pdf PDF link annotation
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/416f234a74e1c0bf726ce608ee2faf25/niwelozuv.pdfIn PDF document text
- https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/fae95fb88ac89a61d5f282b47dea20fd/pububixeroriletub.pdfIn PDF document text
- http://backkwang.com/userData/board/file/65855712457.pdfIn PDF document text
- http://kencert.vn/uploads/image/files/sarajixa.pdfIn PDF document text
- http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f62b96c495---78567049875.pdfIn PDF document text
- https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/7b9fdc6c9e6db6a9e0996d73d413f3e6/48859105068.pdfIn PDF document text
- http://ever-pioneer.com/upload/files/kanekame.pdfIn PDF document text
- https://shibbirs.com/media/files/solusumonotoxabigaxa.pdfIn PDF document text
- https://marathonroller.com/userfiles/files/12940643909.pdfIn PDF document text
- http://aaaexpressheating.com/userfiles/file/niwobosepego.pdfIn PDF document text
- https://samowar.ch/upload/file/rofugexiraxowulezuzor.pdfIn PDF document text
- https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/aa61c496b855a64a7639bf349b939536/xetazudazezazal.pdfIn PDF document text
- https://esportenerd.com/app/webroot/ckfinder/userfiles/files/89697455829.pdfIn PDF document text
- https://wineuniverse.us/userfiles/file/kopisizifeposif.pdfIn PDF document text
- https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/a6297c3139a0bc588f5d07d3aba58a57/99452411982.pdfIn PDF document text
- http://erimti.com/userfiles/file/55936709128.pdfIn PDF document text
- https://cihangirhotel.com/upload/ckfinder/files/11366434194.pdfIn PDF document text
- http://aldo-ins.com/userfiles/file/8104779521.pdfIn PDF document text
- https://viettincapital.vn/upload/files/38068670952.pdfIn PDF document text
- http://dansungsala.com/uploads/files/zogedigodalaroneno.pdfIn PDF document text
- http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160b6d5164fa7a---jarenitidat.pdfIn PDF document text
- http://angarakshaksecurity.com/userfiles/file/dubamiwavusegojomotag.pdfIn PDF document text
- http://leadershipcareer.kr/fckeditor/_upload/file/kixezodezapalifena.pdfIn PDF document text
- https://tasteadmin.com/ckfinder/core/connector/php/custom/wysi_uploads/files/76271404037.pdfIn PDF document text
- http://schnauzermountainminiatures.com/clients/17729/File/14253656359.pdfIn PDF document text
- http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160805bb0a6de8---74732877823.pdfIn PDF document text
- 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bc21.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC21 | 15696 bytes |
SHA-256: fdca64cc5ceca085f8a6fd491a1263dfeead4333279d7c69ed87519a53488766 |
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font_01_sfnt_off0000e456.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE456 | 10848 bytes |
SHA-256: 65f56d1b87c00066c9dda6b0409b13f9888a28cb593299a9e917604885aa4629 |
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font_02_sfnt_off0000fd0c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD0C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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