Malicious PDF — malware analysis report

Static analysis result for SHA-256 f95d70ebb84d6d11…

MALICIOUS

PDF

83.0 KB Created: 2020-12-25 08:44:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9963917880c32d09c8a1b8320a1fa269 SHA-1: 808a291b30b1f506ed2f452e0768cc376ce377b5 SHA-256: f95d70ebb84d6d1131cf759ca6118c7097ef6f9076e834efcf0e3ddc89765179
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a heuristic firing for PDF_SEO_LINK_FARM, indicating it's part of a link farm designed to generate traffic. The embedded URL 'https://trafffe.ru/strik?utm_term=my+verizon+fios+router+is+yellow' is likely the malicious destination. ClamAV also detected this file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0', further confirming its malicious nature. The document body, though heavily obfuscated, contains text related to Verizon Fios routers, suggesting a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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://trafffe.ru/strik?utm_term=my+verizon+fios+router+is+yellow PDF link annotation
    • https://welavomuwaj.weebly.com/uploads/1/3/4/6/134633166/lagakiluvejaxo_semudufoke.pdfIn PDF document text
    • https://cdn.sqhk.co/dekaroku/emgcjer/college_football_scores_app_for_iphone.pdfIn PDF document text
    • https://viwekaxirudadax.weebly.com/uploads/1/3/4/7/134700275/8580912.pdfIn PDF document text
    • https://jedunifoxawixe.weebly.com/uploads/1/3/4/4/134458330/dajubefuz.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/najejemorul.pdfIn PDF document text
    • https://komamopiragi.weebly.com/uploads/1/3/4/4/134444029/vopapubiwetavata.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/xajupixise-mipireguzaj.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwibagula/Zkeocgg/ncert_books_and_solutions_app_for_pc_offline.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/bidivo/e5-4620_v2_passmark.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/lightroom_cc_mobile_tutorial_app.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/sijurugipojabo.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/71779099838.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/weromoredebebajidem.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0C 4740 bytes
SHA-256: 93590f97f5c0420c9c275e257d8f995c87cabc630be5831dbb9727f7c920f31e
font_01_sfnt_off00010c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C64 10632 bytes
SHA-256: 53a00e660b9ea481f6c7d4237480d9ddf1157b2dd3d5381f9ede94a2e1b15598
font_02_sfnt_off000130ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130EA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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