MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file contains numerous external links, many of which are hosted on disposable domains and appear to be part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing. The document body, though heavily obfuscated, suggests a lure related to engine rebuilding, directing users to URLs like 'https://zajinet.ru/strik?utm_term=how+to+rebuild+small-block+chevy+lt1%252Flt4+engines'. No scripts were extracted, but the overall structure and URL patterns are consistent with phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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://zajinet.ru/strik?utm_term=how+to+rebuild+small-block+chevy+lt1%252Flt4+engines PDF link annotation
- https://static.s123-cdn-static.com/uploads/4477164/normal_5fc9c2170d2c0.pdfIn PDF document text
- https://cdn.sqhk.co/zapuduve/hsiatgg/2842469133.pdfIn PDF document text
- http://ottics.ru/how_to_oxygen_levels_increase9kdrf.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4416140/normal_5fccaaa651fdb.pdfIn PDF document text
- http://vpntop.info/how_much_does_valvoline_charge_to_change_transmission_fluidro342.pdfIn PDF document text
- http://fowirunuwajuk.iblogger.org/62974780978.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410462/normal_60134ed17c050.pdfIn PDF document text
- https://cdn.sqhk.co/nimabugokofa/hc8myjj/affirmative_negative_and_interrogative_form.pdfIn PDF document text
- https://cdn.sqhk.co/jatizaru/etbGpTE/28417929578.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460063/normal_60209deadcf52.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417039/normal_60351ed6939d8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378151/normal_606e0cae6a395.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379720/normal_60168fb6c2cfd.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4405467/normal_5ffc9c3d4ad2c.pdfIn PDF document text
- http://nefritthebestthing.site/body_builder_photoyq0mu.pdfIn PDF document text
- https://cdn.sqhk.co/wabajevebe/hdixhaW/jufubosomurofuzefogawuto.pdfIn PDF document text
- http://topcreditmonitoring.info/78334100556weled.pdfIn PDF document text
- https://cdn.sqhk.co/tajiwikiter/4iiiija/oconee_state_park_georgia.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369153/normal_602cf70d02f44.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4383912/normal_6006efc730b13.pdfIn PDF document text
- http://italysummer.space/rizawamozusesizoba4zplt.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/pujirageg/gadibadafezamuvemodoxajo.pdfIn PDF document text
- https://s3.amazonaws.com/zuses/jiwawonom.pdfIn PDF document text
- https://s3.amazonaws.com/febopa/dla_decision_makers_guide_2018.pdfIn PDF document text
- http://baxodivol.rf.gd/nupewuxowiv.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_off0001053b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1053B | 5980 bytes |
SHA-256: b02c31b603a10e8cb1fa3ecbc0b3aab5225375c32c2ff8a5f6a8d7318eb94c4d |
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font_01_sfnt_off0001199d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1199D | 11752 bytes |
SHA-256: d692d6fbd6308ae22cd85ccadefef893b7e84064db3809cf10b89009e7e088ad |
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