Malicious PDF — malware analysis report

Static analysis result for SHA-256 62a86f3a45b03c36…

MALICIOUS

PDF

71.2 KB Created: 2020-11-19 17:49:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b2b3ad22fc1d7552a5d778b2f2362e44 SHA-1: 76b72d4e16d26f4fc09014988e6dd28fa2fc479d SHA-256: 62a86f3a45b03c3617c2d5882b12d7508201d9d02858e601161fe91ef8bcae68
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ggtraff.ru'. This indicates an attempt to lure the user to a malicious website, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ggtraff.ru/strik?utm_term=avs+video+editor+watermark+remover In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446931/normal_5fa6f123856ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448740/normal_5fb6775b7857b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500678/normal_5fb5edee90dc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428069/normal_5f9b721d956fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413590/normal_5f95054b3242c.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/vavapekadoliti/gemiragajafulafabalowafu.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/39882109643.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/98605569552.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/barood_song_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/nyc_comptroller_audit_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/62570088279.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21322d41-bbc7-483d-8522-92e880bf0222/guvudesamafifepedetuxigez.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_off0000d8fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FB 5144 bytes
SHA-256: 7c4670c9df72bdf0c395b80b537a8e3d1cdcdcfcf4d3c0f6d21ade9a1a6bd41e
font_01_sfnt_off0000ea7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7F 10948 bytes
SHA-256: c681f91a168b54b07d6dc4e80b4425e0b48c490f9342a8f128b0d7bd6907e088