MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a significant number of embedded links, with at least 30 external links detected, forming a link farm. One of these links, 'https://yafferge.ru/strik?utm_term=mindhunter+john+douglas', is flagged as a known malicious redirector. The ML classifier and ClamAV also strongly indicate maliciousness, specifically identifying it as a phishing trojan. The document body is heavily obfuscated and unreadable, suggesting it's not intended for user consumption but rather to host the malicious links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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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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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://yafferge.ru/strik?utm_term=mindhunter+john+douglas In PDF document text
- https://sesogipe.weebly.com/uploads/1/3/1/4/131438268/168911.pdfIn PDF document text
- https://gariligiradafa.weebly.com/uploads/1/3/4/0/134041078/siliju.pdfIn PDF document text
- https://gawakugoful.weebly.com/uploads/1/3/4/7/134757428/9aa36.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://8eccd3b7-fb20-4588-a5b5-4d8c58591879.filesusr.com/ugd/0e6328_4818277e5f53496b8756298ec0f387e7.pdf?index=trueIn PDF document text
- https://6f29901e-f5c9-4775-879c-97b2de5c8d5b.filesusr.com/ugd/0bf195_8be700c6ea594d498158cb02e5f16ca5.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/6ea7d5e0-df32-49af-a4e8-2867fbdee903/weider_crossbow_for_sale.pdfIn PDF document text
- https://e9abb47e-19e5-4ec2-9f3c-2aa4e6f2bf0a.filesusr.com/ugd/92be99_feb3e6d74e2e451295f4b177370b82db.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/c271f9ce-62bb-4ece-b147-723a7a5dd663/what_does_stand_out_mean.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e9518ff4-3334-475f-ab39-43172ee8617b/gowesotit.pdfIn PDF document text
- https://03ca3561-abfe-48ca-9b59-b1b2b77f8126.filesusr.com/ugd/1af49e_4e800d2f49db4db8b2fbf557bda6ac17.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/53de0b72-d573-4964-bff1-845d6201a88e/why_is_my_ipad_icloud_full.pdfIn PDF document text
- https://711920be-b761-4f0e-a604-762b26663b16.filesusr.com/ugd/ffcbea_55fef29308364e7e9331f96e05b25199.pdf?index=trueIn PDF document text
- https://8f20b4bd-83f7-4a55-8c6f-e9501e2e061c.filesusr.com/ugd/c1c462_d4f9251b1e8040f1834f82af8869d8bb.pdf?index=trueIn PDF document text
- https://571cbd0a-ba82-408d-be6d-2df53a8fcfe5.filesusr.com/ugd/02af14_2e28c333b98b4c589c97639cc9bf1342.pdf?index=trueIn PDF document text
- https://459ec6dd-5b69-4322-a182-74abbfaa0e48.filesusr.com/ugd/221eaa_a514106b2dc446d48c7afbd30767bca9.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/06af12cc-dc8f-4bf0-a619-6514e4a50ff0/62352846412.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a69c3565-ec98-46e0-af8f-0b1db24a7aab/toni_morrison_paradise_criticism.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_off00010f64.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F64 | 5168 bytes |
SHA-256: bf9aa92f3f51c9890156382d2b097caec8d6ae9d933e55637173b95876174b17 |
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font_01_sfnt_off000120fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x120FD | 17220 bytes |
SHA-256: e29b986869b17fec2f80a2506bbeded310eb3a50fe3995a9b7e954cacd1b0985 |
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