MALICIOUS
206
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file exhibits characteristics of a phishing or malware distribution lure, as indicated by the 'ML_NYX_PDF_MALICIOUS' and 'CLAMAV_DETECTION' heuristics. It contains a link farm with numerous external PDF links, many hosted on disposable domains, suggesting an attempt to obscure the true destination or host a large number of malicious files. The presence of a malformed exploit stream and embedded URLs further supports its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 7
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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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Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTHA PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
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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://pelibifir.ru/123?utm_term=avast+internet+security+2018+free PDF link annotation
- https://cdn.sqhk.co/jarogofef/jiidGid/51855637550.pdfIn PDF document text
- https://cdn.sqhk.co/tuxarulenogu/gNMygf0/bazooka_boy_level_167.pdfIn PDF document text
- https://cdn.sqhk.co/xudekutof/jihgehf/30386163524.pdfIn PDF document text
- https://disinuxokisukoz.weebly.com/uploads/1/3/4/6/134610262/vagusoteleb-makewonul-xinazupufo.pdfIn PDF document text
- https://cdn.sqhk.co/bezakebijuk/fibhgTe/stunt_car_3d_unblocked.pdfIn PDF document text
- https://cdn.sqhk.co/butituguxur/io5jh2s/warivadefawuzabirixa.pdfIn PDF document text
- http://xojuxelase.medianewsonline.com/modal_verb_conversation_listening.pdfIn PDF document text
- https://lupojevoken.weebly.com/uploads/1/3/4/4/134468235/5fabe151.pdfIn PDF document text
- https://cdn.sqhk.co/momogajopi/9ZLsfhj/94306144091.pdfIn PDF document text
- https://cdn.sqhk.co/mutuwatu/jWug7XH/anamika_academy_jaher_vahivat.pdfIn PDF document text
- http://megidexabaror.mywebcommunity.org/91453477697.pdfIn PDF document text
- https://cdn.sqhk.co/tamurikubol/hVzvjgO/collage_maker_online_free_birthday.pdfIn PDF document text
- http://lelekelosutov.getenjoyment.net/16103957539.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://627f215e-41ba-4aa4-9906-5f9f9d117739.filesusr.com/ugd/8ab72e_a4639d6bd109466da31f2bc2911397f8.pdf?index=trueIn PDF document text
- https://810dce77-56ab-4324-823a-3549757f4eab.filesusr.com/ugd/1fad07_e86693fb8c1a419e94eaba0103b44740.pdf?index=trueIn PDF document text
- https://42190e62-4dca-482d-a077-ae7b222d7779.filesusr.com/ugd/b91392_101b4654e7e04d66b0cb0ff28a1acf38.pdf?index=trueIn PDF document text
- https://1b3fde16-7575-45ba-b40e-8916c64185ca.filesusr.com/ugd/8874e8_1fa97f910ca042ffaaca01bda4b331f9.pdf?index=trueIn PDF document text
- https://7a3463bf-3117-47cc-940f-ad9d50d05675.filesusr.com/ugd/9f2514_cc61bada7ad8465cbbf05ea23f9ffe3e.pdf?index=trueIn PDF document text
- https://6196a4e6-b3b5-4a85-a139-4ec84e0a53d9.filesusr.com/ugd/d01287_f733323da93e4e3393e780c1dd8bf969.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_off0000fb47.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB47 | 5512 bytes |
SHA-256: 596d16cc92f012f71c084ac3e1d9ed8d8e801a68dacc17da58882d226fd7770c |
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font_01_sfnt_off00010e26.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10E26 | 10380 bytes |
SHA-256: 55b99a919bde3dab636036a0927bfbae5fd03faf7c3847c72d6894e9ae58dc08 |
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