MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm with numerous external URLs pointing to disposable hosting. The primary purpose appears to be directing users to a large number of other PDFs, potentially for SEO manipulation or to distribute further malicious content. No scripts were extracted, and the document body was heavily obfuscated.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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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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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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://pistant.ru/pbw?utm_term=cue+for+treason+characters+descriptions PDF link annotation
- https://static.s123-cdn-static.com/uploads/4489441/normal_5fc8b54324c11.pdfIn PDF document text
- https://gifuliranofave.weebly.com/uploads/1/3/0/8/130873810/tipumijovulena-lilaxadoj-rilal-wesifiketafi.pdfIn PDF document text
- https://libesomed.weebly.com/uploads/1/3/4/9/134904451/volotikaratumom-zapiwoxozo-pupigetij-regikutibowix.pdfIn PDF document text
- https://sekuruzinof.weebly.com/uploads/1/3/4/8/134897543/wemabedije.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4454819/normal_60b47c3323632.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4470533/normal_6014b603d68d5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465010/normal_6046457646db2.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4365636/normal_5ff2d4d88e0a1.pdfIn PDF document text
- https://funujitumim.weebly.com/uploads/1/3/5/3/135347265/1455774.pdfIn PDF document text
- https://fibepuranes.weebly.com/uploads/1/3/4/0/134041348/6927063.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4484356/normal_6001c64b7e402.pdfIn PDF document text
- https://vetexugosopaviz.weebly.com/uploads/1/3/0/7/130738505/sasume.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4530990/normal_5fe59bf300aa8.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/c63179ea-c5e4-4ca4-8fe3-9ce484915259/oshen_watch_vs_apple.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2b1c9000-1c24-4dbc-b55a-c6b5b12ab50a/94389317026.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9628f4a3-9210-4866-a43d-4eb079e7ea5f/right_triangle_word_problems_with_solutions_and_answers.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/08095241-14cf-4e4b-95b4-704d1ed48bd8/free_audio_book_of_enoch_mp3.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1f0af865-e873-4e9d-8eee-03c076c13fd4/73501918952.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a3267690-0b93-4984-b5cf-998985bd61d9/ruud_pe52-2_manual.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/db3c33a7-eff9-4173-9d8f-2e4ef6c6c13a/the_curious_researcher_bruce_ballenger.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000df60.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF60 | 5116 bytes |
SHA-256: b7d0e62cc431a7c0896088b87eafb4d452c3db079eb65d14fb761fbbf581334f |
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font_01_sfnt_off0000f0bf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0BF | 10648 bytes |
SHA-256: 06adef0df51a97f15e700516812a6e106cf1ab45ae8c3828d7f7db6c62af2489 |
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