MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by multiple heuristics, including ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://zajinet.ru/strik?utm_term=prevailing+wage+in+wv', is flagged as unknown reputation, indicating a potential malicious destination. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9996
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://zajinet.ru/strik?utm_term=prevailing+wage+in+wv PDF link annotation
- https://cdn-cms.f-static.net/uploads/4417645/normal_606de01d06b4f.pdfIn PDF document text
- https://vosafezedivoko.weebly.com/uploads/1/3/6/0/136095507/demoditowada.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4487935/normal_6001e88ec7482.pdfIn PDF document text
- http://bikumusuzavug.22web.org/mimaguxezinibileti.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365636/normal_6039444b76dae.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4485828/normal_5fe074c481937.pdfIn PDF document text
- https://lofokuvowuvi.weebly.com/uploads/1/3/4/3/134362742/4540ffefda2bf.pdfIn PDF document text
- https://gepogujewo.weebly.com/uploads/1/3/1/3/131382217/9507542.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/vuliwisuwig/nonawakug.pdfIn PDF document text
- http://pugabovewel.epizy.com/6181578822.pdfIn PDF document text
- https://a121017b-3fb3-450c-9156-48dd71a9bf80.filesusr.com/ugd/07625c_6c0e101f8ce34d0c9fb09abddfe0664d.pdf?index=trueIn PDF document text
- http://lagadasisipas.rf.gd/dyson_v10_motorhead_cordless_vacuum_cleaner.pdfIn PDF document text
- https://s3.amazonaws.com/lerezazo/gubuditunugibikufexe.pdfIn PDF document text
- http://tetexabe.epizy.com/96555525720.pdfIn PDF document text
- https://f495c71d-628d-4070-9a3d-b699cbb46ba4.filesusr.com/ugd/d99ef3_e80c42b5ee9d4ea3b99de861e097593f.pdf?index=trueIn PDF document text
- https://f8d4b294-f952-4a11-85e8-0a3036f9bdaf.filesusr.com/ugd/ad8f3a_8e28c400b57a4fd7a3d1f5f40e126602.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/054f7cd6-5fd7-4936-8077-65460a64017b/54856811829.pdfIn PDF document text
- https://s3.amazonaws.com/wujafivabipo/4541721694.pdfIn PDF document text
- http://dikivila.epizy.com/86564129705.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6110fa9c-1b0a-443e-b569-e8fc5e6954f7/mewetiwag.pdfIn PDF document text
- https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_bd24525af7fc4316aa90e73a47288580.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000eac5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEAC5 | 4428 bytes |
SHA-256: f7176dc255332f5ed50ec00ed61a4afb5e99fdf7e9ab7a45030a9ace3ce71e99 |
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font_01_sfnt_off0000f9d0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF9D0 | 11348 bytes |
SHA-256: a0bd3e0bdcc871884ad15a52aa4a386fd3e011f8bbaa31bae1b2d205c16944ca |
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font_02_sfnt_off00012094.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12094 | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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