Malicious PDF — malware analysis report

Static analysis result for SHA-256 920b157222f8b820…

MALICIOUS

PDF

68.7 KB Created: 2020-12-19 16:44:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3965402073918f1efb09d86d1ecc50dc SHA-1: 1706fd4d00b4efb4ffed97f9a895efc1ef591696 SHA-256: 920b157222f8b8206f6b4895d600b0db7732b4f499aaf9aaeba05f4518000c5b
156 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The primary URL, 'https://trafffe.ru/strik?utm_term=ancient+christian+magic+coptic+texts+of+ritual+power+pdf', suggests a phishing or spamming attempt. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links indicate a malicious intent to redirect users to potentially harmful content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=ancient+christian+magic+coptic+texts+of+ritual+power+pdf
    • https://petapizegu.weebly.com/uploads/1/3/4/3/134327096/fe435f4a79410a.pdf
    • https://nonefipuxope.weebly.com/uploads/1/3/4/4/134493331/4049414.pdf
    • https://vuxilimibipemop.weebly.com/uploads/1/3/1/4/131453056/fetolegowoj.pdf
    • https://rexolofozex.weebly.com/uploads/1/3/4/3/134368018/4f1416.pdf
    • https://nadoxunerakabem.weebly.com/uploads/1/3/4/3/134378450/ziwupek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f85d3304-e1b5-4a48-9d8c-777c81147108/kitchendraw_6.5_crack_download.pdf
    • https://uploads.strikinglycdn.com/files/35416cf6-cfb6-4033-b883-cc162644af5f/67058741483.pdf
    • https://uploads.strikinglycdn.com/files/d7cbbc43-0a51-4fd5-b3a7-865abe17cae8/pigibixodijogewudexures.pdf
    • https://s3.amazonaws.com/vatosolikijike/lamod.pdf
    • https://uploads.strikinglycdn.com/files/fdd6d645-34ed-444d-8228-97285a0734ea/93086432900.pdf
    • https://uploads.strikinglycdn.com/files/85aa4194-3f38-47f1-9e0e-6f3db055185e/27914197888.pdf
    • https://uploads.strikinglycdn.com/files/e323fd0b-68e5-49d1-a69d-05691ba53ac0/25915208761.pdf
    • https://uploads.strikinglycdn.com/files/e7e7878e-941f-423e-a2e9-186d8dfa7281/half_orc_ranger.pdf
    • https://uploads.strikinglycdn.com/files/ae640a78-a61e-4289-a317-9fe8507b6aea/jinejolijewobotupu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce32.bin
132368b1b8c25afdb865b8abab4d96c53fc3343f61b35ae09394ec36efe127b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE32 5716 bytes
font_01_sfnt_off0000e198.bin
8f58cec9d5ab13de02a417403e2c445847a7acfd8dc1e2605ff26f7d80f4e456		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE198 10684 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.