MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many of which point to a redirector URL (https://golowaki.ru/strik?utm_term=how.much+is+an+oil+change+at+take+5). This behavior, combined with the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_UTM_REDIRECTOR_LINK' heuristics, strongly suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection further corroborate the malicious nature of the file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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://golowaki.ru/strik?utm_term=how.much+is+an+oil+change+at+take+5 PDF link annotation
- https://static.s123-cdn-static.com/uploads/4464313/normal_60017451eb8f5.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4409806/normal_5feb0bfe9343b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375357/normal_6052de86003c8.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4416792/normal_5fc7c457e43c2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416930/normal_60305bc6bb049.pdfIn PDF document text
- https://cdn.sqhk.co/letarezetap/qCFbfIF/free_funeral_program_brochure_psd_template.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4459180/normal_60089df8ec800.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4384832/normal_604b946ed0184.pdfIn PDF document text
- https://cdn.sqhk.co/navififoro/gfX9ege/sniper_killer_assassin_shooter_pc_game_download.pdfIn PDF document text
- https://cdn.sqhk.co/tubafejog/xPvihjf/sekoriwiru.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/0475d37c-0ed1-4df2-838c-666dd9aefe59/2002_ford_explorer_v8_transmission_problems.pdfIn PDF document text
- http://ninalosuza.rf.gd/fejakigurunekis.pdfIn PDF document text
- https://b3709dad-42f4-4621-9b7e-74d31ca978cd.filesusr.com/ugd/f91cf1_90ea942775b1491b94dde95eaaa54358.pdf?index=trueIn PDF document text
- http://telawusufolij.epizy.com/furuwipefejugukujexatox.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a983dd6e-71b1-428d-9875-eef521197752/how_big_is_whirlpool_duet_washer.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/25150c2a-4d9a-4355-840d-7413f7c10096/starbucks_coffee_cup_christmas_ornament.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/99c7b555-37c0-4e5c-b3da-087309d6d3a0/pizin.pdfIn PDF document text
- https://7f793f8f-877f-420e-851b-8bae9ea62a4d.filesusr.com/ugd/78c764_f5ce31ab4aae44aaa316868a3241311b.pdf?index=trueIn 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_off0000e5d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE5D4 | 5388 bytes |
SHA-256: 3b0434876662ca1609e12a69d559c12f96091b7c86b6d0dd75025859600b4fd4 |
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font_01_sfnt_off0000f824.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF824 | 10548 bytes |
SHA-256: e8436ad8c059835b86e73a18e7207176d9e6a1e9c6107a2ef75c3423fb6d0d3d |
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