MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable domains, indicating a link farm designed to redirect users. The embedded URL `https://trafffi.ru/aws?utm_term=descargar+antivirus+gratis+para+celular+android+uptodown` suggests a lure related to downloading antivirus software, likely a pretext for phishing or malware delivery. No scripts were extracted, but the structure and numerous external links strongly suggest a malicious intent to lead users to harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
Heuristics 6
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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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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 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://trafffi.ru/aws?utm_term=descargar+antivirus+gratis+para+celular+android+uptodown
- https://wiwotejezewol.weebly.com/uploads/1/3/4/6/134691264/jenalenidefasapemiwi.pdf
- https://laguvibokabab.weebly.com/uploads/1/3/4/3/134383318/417ee7032daef.pdf
- https://rasiporimi.weebly.com/uploads/1/3/4/6/134614798/4b93ffefac3.pdf
- https://reruwezoketa.weebly.com/uploads/1/3/4/5/134503250/sitenu_falon_lererovudij.pdf
- https://xogosikeduvad.weebly.com/uploads/1/3/4/6/134669078/wowule.pdf
- https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/97878.pdf
- https://namekabesomi.weebly.com/uploads/1/3/4/6/134668803/kolebisa.pdf
- https://wirukibit.weebly.com/uploads/1/3/0/9/130969322/e9a8b228bda7e1a.pdf
- https://rumeravovavupol.weebly.com/uploads/1/3/4/6/134619367/zonotawo_devorula.pdf
- https://wudizibi.weebly.com/uploads/1/3/4/4/134477582/vuzobito-wiliguberobi.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://uploads.strikinglycdn.com/files/c372beca-27af-46c7-bf5f-d75728fb2b1e/tulusonebukojegojudiz.pdf
- https://uploads.strikinglycdn.com/files/8b1cffad-02d8-469e-882b-494423d4e984/10369386237.pdf
- https://uploads.strikinglycdn.com/files/e6fe6a27-192e-4543-9bdf-8bd42e913a88/68331401157.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000aa08.binec4aa0fd857c2ffa623008f82b6c42c53a305579fde14822db9f4c1b0a0856ea |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAA08 | 5272 bytes |
font_01_sfnt_off0000bc17.bin6ea973b48ec0339fed49561aabecf9c340de85140e29be39729cb51bfc8082c3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC17 | 8508 bytes |
font_02_sfnt_off0000d8a9.bin4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8A9 | 4324 bytes |
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