MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document was identified as malicious by ML classifiers and ClamAV, indicating it likely exploits a vulnerability or serves as a lure. Heuristics reveal it functions as a link farm, pointing to numerous other PDF files hosted on compromised websites. This suggests a multi-stage attack designed to obscure the ultimate malicious payload and evade initial detection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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 http://interno-kazan.ru/upload/files/61324251143.pdf
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/91f98198dce3ab61a2dbd023a70ee176/buwefiliduzuxejoruf.pdf
- http://adria-ex.com/images/blog//file/27758708690.pdf
- http://camberwelltaxi.com/survey/userfiles/files/32708195780.pdf
- https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/b98bb5dbfebb6e53d70f949c001b8e89/pugigewibuka.pdf
- http://accessiblevehicleservices.com/userfiles/file/26663501871.pdf
- http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb88c93e8e---dizifetiwupokigimule.pdf
- https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/bf901148ba0fa29fe2678f29709895a2/wulojidaxidowubava.pdf
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/s7loj83npnu74uv66vbrq9607o/zobegopidim.pdf
- http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160770182dbbdb---konokagagama.pdf
- http://beiwendq.com//data/attachment/file/28051369618.pdf
- https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8b01e90b6---14018296192.pdf
- https://skyfireconsulting.com/wp-content/plugins/super-forms/uploads/php/files/bttddsu5motnur2sjnrd8qoeeu/15697596494.pdf
- http://wenxuezj.com/images/File/povejajejizozujinu.pdf
- https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/2e951747528513c97d81630b69f4de20/57331597238.pdf
- https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608d293dd15e1---35610922854.pdf
- https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a9fcea66f4b80436c7512a052fa86359/68665372804.pdf
- http://camionespanamericana.com/userfiles/file/31374520992.pdf
- http://immopolignano.lu/images/13116024190.pdf
- http://bhk-aindling.com/userfiles/files/nuzekuzuto.pdf
- https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/ibltgirf4f95dgaqnurl3odl85/gukilevirebubufavijisaniw.pdf
- https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e5dcf0e50fd---furovuzudo.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=childrens+pub+quiz+questions+and+answers
- 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_off0000f3cb.binf9ac46fd684ca2ad138f696d9cd72b535c7ce3dfcec7ecc075ef635fb69702d8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3CB | 11052 bytes |
font_01_sfnt_off00010d15.bince39430f25e6620b4acb5fb174f2329c23d6d7e24c474ed554d3c0991626be21 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D15 | 17272 bytes |
font_02_sfnt_off00013a2c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A2C | 16792 bytes |
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