Malware Insights
The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, but no clear textual lure. The presence of multiple external URIs and the link farm heuristic strongly suggest an attempt to redirect users to malicious sites, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9981
Heuristics 5
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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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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://bologen.ru/strik?utm_term=gurps+zombies+pdf+free PDF link annotation
- http://zegererevez.medianewsonline.com/tagugugulobakajopidigavap.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4375521/normal_5ff13c6ddd256.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369927/normal_6035b7e16a8da.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458148/normal_601c676147c9d.pdfIn PDF document text
- https://cdn.sqhk.co/kuniremolu/a1NgeNf/bike_race_app_tips_and_tricks.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375340/normal_6055b84295fca.pdfIn PDF document text
- http://matimomewojime.mypressonline.com/lubavirivu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426267/normal_5fe78aa0cecf8.pdfIn PDF document text
- https://cdn.sqhk.co/xipepovivik/aXsogdL/39210425407.pdfIn PDF document text
- http://gexopidikimo.mygamesonline.org/23223521577.pdfIn PDF document text
- http://daludaja.getenjoyment.net/384677477.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413575/normal_60210c821e125.pdfIn PDF document text
- https://cdn.sqhk.co/mobubivifa/ejgiEeG/19032902015.pdfIn PDF document text
- http://palupalukagu.mygamesonline.org/sovowedamofoxajajonupisof.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490725/normal_602cf5cd35e83.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376127/normal_604e6eea0a415.pdfIn PDF document text
- https://cdn.sqhk.co/xusezasaj/jgfPibF/ibm_rational_requisitepro_free.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/da281907-7a27-4d92-9b43-d520eb6bca68/this_is_amazing_grace_bethel_lyrics.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/80972c1e-48c9-48a0-a3f8-45cf152d78ed/xerox_workcentre_7835_service_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5e43c622-06d8-4b5f-b4d2-285fcd52292a/final_cut_pro_x_trial_crack_macos_catalina.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/371cdbe0-2649-4e98-a8c6-a11150d9c7b5/robertshaw_thermostat_instructions.pdfIn PDF document text
- 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://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00019484.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19484 | 26196 bytes |
SHA-256: 3211b123526a5d2b013bd010c7df73d32d1bd39c6f5c80c842ea7a97f0193f12 |
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font_01_sfnt_off0001e5d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1E5D4 | 5168 bytes |
SHA-256: dc51d8e5bc6b7cb0b4afd82aebff95e8d4df2f6853a77e7112e0a7b69f0b3993 |
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font_02_sfnt_off0001f756.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1F756 | 12620 bytes |
SHA-256: 81478b67064cda656b5cdcea3ab4d2b981bb37e067d5fd20d38d17c8fc1eeb57 |
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font_03_sfnt_off00022086.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x22086 | 16092 bytes |
SHA-256: 39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67 |
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