MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM and PDF_SEO_DISPOSABLE_LINK_FARM heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or distributing malware. The embedded URLs point to various PDF files, suggesting a link farm or redirection scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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://static.s123-cdn-static.com/uploads/4401558/normal_5ff1e6bbd6c3e.pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4424328/normal_601a77d1a8a38.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383160/normal_600ff47be9045.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465128/normal_603096ad45e5d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4481059/normal_6054299abe094.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4373797/normal_6042ed83807b5.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4443588/normal_60afe2ca4d807.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393635/normal_5fd1f001dac51.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365584/normal_600c8c4f5b3b3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404975/normal_604d2f4180676.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4457563/normal_60523f852a72d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501374/normal_604027e296d54.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4461791/normal_5ff0c6634275c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4370088/normal_5ff6b0d392bbc.pdfIn PDF document text
- https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/89e96516f5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446264/normal_5fc70e918b8cd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4494149/normal_5fee96ed18b0a.pdfIn PDF document text
- https://wegukovomaf.weebly.com/uploads/1/3/4/8/134865780/bf077.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4482191/normal_602380f8c06a2.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://feedproxy.google.com/~r/wb/ENAH/~3/Xr6F2PkPTcg/wb?keyword=2007%20chevrolet%20impala%20lt%20tire%20size%20p225/60r16PDF link annotation
- http://bojirakaj.pbworks.com/f/1176114755.pdfIn PDF document text
- http://nilanom.pbworks.com/f/pinemurogatogo.pdfIn PDF document text
- http://supatibu.pbworks.com/w/file/fetch/144428862/how_to_play_dinosaur_game_on_chromebook.pdfIn PDF document text
- http://bupataved.pbworks.com/f/43358865799.pdfIn PDF document text
- http://lugozamuxika.pbworks.com/w/file/fetch/144422037/most_common_words_in_english_language.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_off0000daf9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDAF9 | 5908 bytes |
SHA-256: 9310346fbf2842a378911c66bea0172ce6bdb4095f7484a55c4962557d160df8 |
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font_01_sfnt_off0000ef0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF0F | 10052 bytes |
SHA-256: 2da2f4776a62cf4505da13de6ede4daebff7923581a3f0bebea0139fdb8b2431 |
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