MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
The PDF contains numerous links pointing to compromised WordPress sites and other disposable hosting, indicating a link farm designed to distribute malicious content. The presence of ClamAV detection and ML classification further supports its malicious nature. The document's structure and embedded links suggest a phishing or malware distribution campaign, likely initiated via spearphishing.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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 https://drafthe.ru/uplcv?utm_term=difference+between+single+threaded+and+multithreaded+process
- http://hoteldanang.vn/uploads/images/files/79650732186.pdf
- http://hglobaltour.com/FileData/ckfinder/files/20210610_B6DA716E973F4F41.pdf
- http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/b6764416065d9697f9289ec14752fbe8/17035248120.pdf
- https://nestaerospace.com/uploads/file/14167982329.pdf
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160978fb443978---setet.pdf
- http://vizugy.hu/uploads/files/39759630332.pdf
- https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606d545c9bef6---29111706750.pdf
- http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab0b978fca9---43000463886.pdf
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/9pg1c0n6vp283rjc4vr1buq9v6/81826696066.pdf
- http://darienhigh69.com/clients/866565/File/wepivirip.pdf
- http://udclassof1968.com/clients/74076/File/18859523836.pdf
- http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac124662837---1970695364.pdf
- http://blpest.com/UserFiles/file/kumobuv.pdf
- http://acmemask.com/upfiles/editor/files/41964240027.pdf
- http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609fd9412036d---9923756331.pdf
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1608a71c6ec306---87201097266.pdf
- http://allprintusa.com/admin/images/file/8776995598.pdf
- http://animationcoach.com/userfiles/file/saxedigovefejezasad.pdf
- https://sesconbs.org.br/ckfinder/userfiles/files/77474917522.pdf
- http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c68de41ed3---wojakivo.pdf
- https://sonntag-immobilien.lu/userfiles/files/xipegekebag.pdf
- http://montrealinkwell.com/clients/c/c4/c478fb9048b4d856ed1aa16e2301f982/File/42094760630.pdf
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d8da41be9a8---80142405838.pdf
- http://bjjiffy.com/upload/vekewagaxeri.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_off0000ef34.binad56984bc77ebeba8d4448a4b0168f1be329e20787dc28930219f12706d7c72c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF34 | 17136 bytes |
font_01_sfnt_off00011c07.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C07 | 16792 bytes |
font_02_sfnt_off0001341e.bin18be4124dc483988dde9c65e8c731ac226917f178f86728db72308dd7a1ce783 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1341E | 11396 bytes |
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