MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous heuristics indicate the PDF acts as a link farm, pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs are likely used to redirect the user to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://cructi.ru/uplcv?utm_term=square+root+of+a+half PDF link annotation
- http://www.logomarcanet.com/userfiles/file/babelizosenede.pdfIn PDF document text
- https://serka.com/serka/upload/files/pikijinav.pdfIn PDF document text
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134265f5075f---68972440920.pdfIn PDF document text
- https://highlander-inn.com/assets/userfiles/files/xefoxu.pdfIn PDF document text
- http://hepiran.com/cache/fck_files/file/giledeza.pdfIn PDF document text
- http://www.dialog-seversk.ru/jsplugins/ckfinder/userfiles/files/45200149003.pdfIn PDF document text
- http://zl369.net/userfiles/file/saxivelevumixefafej.pdfIn PDF document text
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/02b249fe19e1c0ec7f7421bb90d0ab5a/vasitapugozam.pdfIn PDF document text
- http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613666135a9cd---26065179166.pdfIn PDF document text
- http://bienchidan.org/uploads/files/mesevenusifikumesag.pdfIn PDF document text
- https://telorgabus.com/contents/files/pigekenuguderigenatolur.pdfIn PDF document text
- http://tucholainfo.pl/userfiles/file/kovotur.pdfIn PDF document text
- http://fixafilm.se/userfiles/file/41945486046.pdfIn PDF document text
- https://mahae.hu/files/files/24130610452.pdfIn PDF document text
- http://cancercareresearch.com/userfiles/file/gigejivogevoxefuf.pdfIn PDF document text
- http://www.jobsincrete.gr/images/_user_na/file/sibebisexizuv.pdfIn PDF document text
- http://chalappuram.com/userfiles/file/radodeduxitagisatikos.pdfIn PDF document text
- http://veterinariogiardinelli.it/userfiles/files/zuxepagisubo.pdfIn PDF document text
- http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/16132230b40409---sebuwijilukesor.pdfIn PDF document text
- https://togelunited4d.com/contents/files/88517921097.pdfIn PDF document text
- http://seychelles-resort.com/images/blog/file/39689741579.pdfIn PDF document text
- https://nuttydog.hu/ckfinder/userfiles/files/votaka.pdfIn PDF document text
- http://energo-market.ru/sadm_files/muxibet.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_off0000c511.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC511 | 20060 bytes |
SHA-256: 64daec14aa16c19bde97b80942d0f7cc67b8c404d988d6f4241485b6851a8837 |
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font_01_sfnt_off0000fa10.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA10 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00011227.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11227 | 10268 bytes |
SHA-256: 37ca5bb43103cf8af60866535354aca2afddaaac0f8a3858acc2dfeaa25b49d6 |
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