Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6effbc37a294cbc…

MALICIOUS

PDF

68.0 KB Created: 2020-12-27 20:49:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 1de70d13ce7caf3cc084768d8ded27ac SHA-1: 9ea6cb4bb0b2fe74227386487cece71a8bf3b347 SHA-256: e6effbc37a294cbc1b055d1df0594b89a6e75875575c51956b683ee576618b49
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/strik?utm_term=drift+allstar+download'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document structure indicates an attempt to redirect the user to a harmful site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/strik?utm_term=drift+allstar+download In PDF document text
    • https://static.s123-cdn-static.com/uploads/4388048/normal_5fc720e200d4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465025/normal_5fc59f627b7c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370056/normal_5f8936f532e5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446930/normal_5fb340c27395a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367648/normal_5fe3f322e2b4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428069/normal_5fd7c61721850.pdfIn PDF document text
    • https://cdn.sqhk.co/wodigajamu/g5hbgd9/talking_flowers_name.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/N6Fgijh/fijijodumafe.pdfIn PDF document text
    • https://cdn.sqhk.co/kebubupoxiz/8UgjhfX/60403419862.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/vovabagubajegeb/sailboat_mainsheet_bridle.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC43F 2880 bytes
SHA-256: 619a44e8b5c2a2d3fc0e18259d8022938ad4f8b30552901bc68dc41c3d0f2ef0
font_01_sfnt_off0000ce7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7D 4992 bytes
SHA-256: 4b96268c3c758304b24fc80fd8e4348e3cc85e28f97bc764458100ef566e34af
font_02_sfnt_off0000df9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9C 9824 bytes
SHA-256: 3d60fefac52bd20b1b55727ae1ddf3e096ec7e3865a189225a364ff6e3a05cf0