Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bd07c8759c0e53a…

MALICIOUS

PDF

69.4 KB Created: 2020-12-24 21:02:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 35e87f53adb11ad3bea6c1a286378eca SHA-1: 664d43bc537579e4ca23f6e23d013bf9daaf304c SHA-256: 6bd07c8759c0e53a0137cfadbd080d3dab1c008c983b1aa5cd7ecc13f4376320
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=fox+5+news+entertainment+reporter'. This indicates the document's primary purpose is to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is sufficient evidence of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=fox+5+news+entertainment+reporter In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380692/normal_5fa6903f62b64.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445729/normal_5fb61e0e5fcd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469378/normal_5fdc84b810997.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5fb7e79ff0a9d.pdfIn PDF document text
    • https://cdn.sqhk.co/duzemata/cxqjgja/samutidatudesunotofawu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_5f8aba7dd483d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373248/normal_5fe349042df49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387821/normal_5fbbb4a601199.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5f876cf119176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421966/normal_5fadf2089fb4c.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/zasepo/anjaana_anjaani_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/42008478310.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/gutetoworalebiwizasavon.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/toxigezigisitakoguwexe.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_off0000d135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD135 5172 bytes
SHA-256: 514fc4127bc15c54301af8abe0fac59b410e638c0cab6e35831ee7c9e0e98a01
font_01_sfnt_off0000e2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D5 11068 bytes
SHA-256: d139efff7597c810d232243af722eb56f4dd33c8dbe8fe2be683923577a4dc7a

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