MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. The document contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to distribute further malicious content. The 'SE_CALLBACK_LURE' heuristic indicates the document may also attempt to trick users into calling a fraudulent support number.
Machine Learning
- Nyx PDF Classifier malicious score 0.9943
Heuristics 7
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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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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://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/1eb72dac0942388a197a2d6d3cf429a6/jaruzovupofafeladikab.pdf In PDF document text
- https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c49baad7d36---mirefuvexodebodunupew.pdfIn PDF document text
- http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cc709704f0---matonil.pdfIn PDF document text
- https://dagvandearchitectuur.be/_files/file/39909533181.pdfIn PDF document text
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160863877357c9---81114409352.pdfIn PDF document text
- http://bertrandetgastineaudesigners.com/userfiles/file/39273139973.pdfIn PDF document text
- https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a40e703d9b8---vumutexegixiwidi.pdfIn PDF document text
- https://ivanda-commerce.hr/userfiles/file/subizibepiwoluvawupu.pdfIn PDF document text
- http://sea-cruise.ru/ckfinder/userfiles/files/481445817.pdfIn PDF document text
- https://staffxrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/71f45268eb742342e2bea15dfc6fbc5c/2251375174.pdfIn PDF document text
- https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/85b8cce8e347b4c8e9ede7ec02e6101f/31044539962.pdfIn PDF document text
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/45a0ac3bb13b3fee1c3ab577c58564f6/91830026568.pdfIn PDF document text
- http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2c9cf197d1---29712712764.pdfIn PDF document text
- http://ajtoablakcentrum.com/_user/file/52791064773.pdfIn PDF document text
- https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9e4f7295f---lupol.pdfIn PDF document text
- https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/66eeb8ca363e92ef24688297f1b1c824/vubozafenipusit.pdfIn PDF document text
- http://beastyenergy.com/userfiles/file/27704589435.pdfIn PDF document text
- https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6dda7fb66---resumesezeb.pdfIn PDF document text
- http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c950da490f6---pewipatufovivinosawajib.pdfIn PDF document text
- http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607593e6aa698---wokagobesosezowefako.pdfIn PDF document text
- https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/6jfcaj99pa8cdg4sisilbagk90/68673122731.pdfIn PDF document text
- https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079a7222abca---tuvakuzativosafojasuge.pdfIn PDF document text
- http://orsini-blasioli.it/userfiles/files/99333618939.pdfIn PDF document text
- http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160c8ed880c66c---37325634977.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/c5767f91f43a88f6746364ef79bccabd/74367493567.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=applied+groundwater+modeling+simulation+of+flow+and+advective+transport+pdfPDF 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_off0000ca4a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA4A | 16200 bytes |
SHA-256: e519382e2c16e453738e5c698c0ba88181a4cc3a5193dca70b58b09d70c04013 |
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font_01_sfnt_off0000f456.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF456 | 11196 bytes |
SHA-256: 5813cb63dd24991eb32c5ec3bde14f44d4c307a4e51891d15b6a9c08176c4c2a |
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font_02_sfnt_off00010e72.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E72 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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