MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to various PDF files hosted on potentially compromised websites, suggesting an attempt to distribute malicious content or phish users. The 'SE_CALLBACK_LURE' heuristic indicates the document likely prompts the user to call a phone number, a common tactic in tech-support scams or callback phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://xahscw.com/userfiles/file/49270457733.pdf
- https://regeneracion-capilar.com/wp-content/plugins/super-forms/uploads/php/files/e06507e453d449ee8dd8d40eb96711d4/jezimata.pdf
- https://ankaratemizlikcim.com/depo/sayfaresim/file/jifuwoxaf.pdf
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a791308e108---burigexajokosevapideza.pdf
- http://eugensa.lt/app/webroot/uploads/userfiles/files/94008727096.pdf
- http://alexhofford.com/temp/files/file/tusejukavemifatodalifonan.pdf
- http://anandamsanyal.com/userfiles/file/tomepojoduxawegasimes.pdf
- http://vladjurnalist.ru/archive/file/mezufixufovugesexevidot.pdf
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160813d6392436---43282013335.pdf
- http://www.anclupnapoli.it/userfiles/file/57927218535.pdf
- http://pierrevillers.fr/mairie_files/file/gitexot.pdf
- http://ehs1958.org/clients/73155/File/6216507969.pdf
- https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609be120cba2b---sowodejuvogeguxu.pdf
- http://mcgrathpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/36414863163.pdf
- http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/c42a0k4e4orpn6bihm29l8r2rs/82682957952.pdf
- https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/c10d0844a2b8e9cc83fb2e88ba9ba1d5/61356687446.pdf
- http://aarogyamedico.com/userfiles/file/7718573736.pdf
- http://ifa-astrologie.de/userfiles/file/tabaxapujufizowekejof.pdf
- http://101-games.ru/images/uploads/files/tezenow.pdf
- https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/c173f8cc71a972aa70dc3d908ca67e97/82716247637.pdf
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608c446a9cacc---diditisimi.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f482083261---nexosaravoli.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=the+rules+of+thinking+pdf+download
- 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_off0001b639.bin3d048b3bb2396657f660c83314eea6f1c25887883de831aebced6edb51bf21ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1B639 | 11020 bytes |
font_01_sfnt_off0001cfa9.binf8dc1f4d07d07861952d957352dc53d81fb7d6c5ba285cb0696b21b72ffa29d0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1CFA9 | 18300 bytes |
font_02_sfnt_off0001fedf.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1FEDF | 16792 bytes |
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