MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with many URLs pointing to compromised CMS upload directories or disposable hosting, suggesting a phishing or malware distribution scheme. The document body is unreadable due to encoding, but the presence of numerous external links strongly supports the link farm attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9950
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://huntic.ru/uplcv?utm_term=forensic+accounting+articles+pdf
- https://ebdaatcoop.com/userfiles/files/48745388510.pdf
- https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609684604dc34---betutulazikuvijir.pdf
- https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/ofm7hqi4s3jg154lia150i51cr/nofikorisaxoxisenanuvi.pdf
- http://f-okinawa.com/img/tmp/files/rusirudiluput.pdf
- http://bjaimama.com/data/upload/2021/07/file/202107031528167985.pdf
- https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/4de30d68b3e33de06cf5f270edb525d0/15197277082.pdf
- https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/b25bc2f3d4ecf3bbfe881e7b829772ea/rabixabevokamuxetaparu.pdf
- http://alrabbancapital.com/file/files/52865028460.pdf
- https://planet-for-events.de/userfiles/file/59766341988.pdf
- http://md-servicios.com/userfiles/file/27295840326.pdf
- https://repare-ton-smartphone.com/userfiles/file/giwixoga.pdf
- http://yavuzselimvakfi.org/resimler/site/files/59678391163.pdf
- https://turbooto.vn/upload/files/43418643601.pdf
- http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef2422b24f---bemebiwazuvakarim.pdf
- https://immobilgold.com/file/melumajadoxolaxibaxuse.pdf
- https://noriupapildu.lt/ckfinder/userfiles/files/fidabitaxusiposepasumo.pdf
- http://divorce-difficile.fr/userfiles/file/55467912530.pdf
- http://5mal4.de/moneyvidya/web/images/userfiles/file/98406010333.pdf
- https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/ef94c02150abcc8aa7495f2aacb62ca3/22402861127.pdf
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/4cd55c917d8019a260719809602d8f01/79654702207.pdf
- http://alteredcompta.com/buddha/ckfinder/userfiles/files/witimexokowuwo.pdf
- http://ezibra.pl/upload//file/24651687697.pdf
- http://thebaileyfamilyreunion.com/clients/6/6f/6f45d7e5c9279c15d0bd3a3fa6949618/File/2736893838.pdf
- https://www.studioline.ie/ckfinder/userfiles/files/42442826273.pdf
- http://schooldistrictservices.com/clients/f/f6/f6ab1571d2cdf5e569af7b76e288b17c/File/komokifa.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b56f.bine72795a27d16ce4bfaa80c9ad997ebbbeae30ce5625ed79714e8f82f1193b2e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB56F | 10872 bytes |
font_01_sfnt_off0000ce78.bin51082bdb67df54c84cd6b11e1c4559b226e4402a16cf344a5efb5012c490852d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE78 | 15416 bytes |
font_02_sfnt_off0000f494.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF494 | 16792 bytes |
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