Malicious PDF — malware analysis report

Static analysis result for SHA-256 13fe57bab0484060…

MALICIOUS

PDF

61.3 KB Created: 2020-11-24 15:50:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5bdd3d795731f0c11ff2f021961ee2de SHA-1: 8a61e9767af58e1f4b92bf941760e9bebdd52997 SHA-256: 13fe57bab04840605b21738d6d426696dd9ea2842a1787b51d5d364d2b7b4b09
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that is disguised as a movie title, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI heuristic point towards a malicious document designed to trick users into visiting a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=strange+magic+full+movie+in+tamil+dubbed PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393626/normal_5fbbada83dd24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5f9ab819bd6ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419218/normal_5fa320525bbcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450513/normal_5fb7377a60d85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383568/normal_5f8c68fb5fc5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369773/normal_5fa60ce7c0f7e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nabifovu/head_sports_games.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/air_penny_4_performance_review.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/51714234906.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/r_nfl_streams_lions.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/dokadaxozenilosow.pdfIn PDF document text
    • https://s3.amazonaws.com/mejawiwomak/luzulawesojigomozeserira.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/90504722825.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b099.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB099 5468 bytes
SHA-256: 0aaa3b818138ee3cc7d8b7feb3fbe18f439b52bbd9529e2e04d8766f531e3a49
font_01_sfnt_off0000c327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC327 11108 bytes
SHA-256: ff32118e96aba2059e51641ca6384e3d076623fa17e9ae328d5da3cf5092163e