MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised or disposable hosting sites, likely for phishing or malware distribution. The presence of numerous PDF links and the use of 'utm_term' parameters suggest an attempt to manipulate search engine results or track user clicks.
Machine Learning
- Nyx PDF Classifier malicious score 0.9971
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://renesens21.com/ressources/upload/files/rijisekizojaluko.pdf In PDF document text
- https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/3k1k74b2bjgdjq4n5trtojb54f/33646312907.pdfIn PDF document text
- https://smartcirclegroup.com/userfiles/file/13978969780.pdfIn PDF document text
- http://xn--365-pn7mwb654m2qn.com/ckupload/files/gafatetulumexunusiwixibew.pdfIn PDF document text
- http://easyliveconstruction.com/ci/userfiles/files/70514492313.pdfIn PDF document text
- https://masini-de-ambalat.ro/images/userfiles/82149918812.pdfIn PDF document text
- https://hamasataccessories.com/userfiles/files/74180107692.pdfIn PDF document text
- https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/b09d69cbfd1c0f935a43dee4f57db27a/nijivemofolox.pdfIn PDF document text
- https://youkuvpn.com/upload/files/dawod.pdfIn PDF document text
- https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/1111a07faaf6f3f8148582e80f723f33/10373150516.pdfIn PDF document text
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/161410e2e3802d---51089363627.pdfIn PDF document text
- http://skidubravy.sk/spravca/ckfinder/userfiles/files/gopanira.pdfIn PDF document text
- https://ln80.cn/filespath/files/20210903075055.pdfIn PDF document text
- http://associazionemillesogni.it/userfiles/files/rafazeki.pdfIn PDF document text
- http://infiniti.e-library.tw/uploads/files/39714749151.pdfIn PDF document text
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137749e64328---lawanatezum.pdfIn PDF document text
- http://taxicityplus.ru/userfiles/file/51832258481.pdfIn PDF document text
- https://postele-z-masivu.sk/ckfinder/userfiles/files/49164001757.pdfIn PDF document text
- http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a05c92a004---26531298337.pdfIn PDF document text
- https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/ab71d9ae6a4003e3c9e75dd8191fb40e/4751919966.pdfIn PDF document text
- http://massageindex.nl/images/uploads/sajewagolukak.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=android+auto+app+downloadPDF 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000be45.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE45 | 10252 bytes |
SHA-256: 657c7633836c4c473d77b56fb72455bc444f59ff68b120cb589cfad73e5989d8 |
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font_01_sfnt_off0000d56b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD56B | 17128 bytes |
SHA-256: a6d4903cea12d558c43f072d0281893ff9f2d817d818bdb09c419748607d7ebe |
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font_02_sfnt_off0001012f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1012F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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