Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cd6c448d7632a00…

MALICIOUS

PDF

56.9 KB Created: 2020-11-25 07:57:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ff24df267fdcfc5f385772e42408ab2a SHA-1: db47fbbbe72ce9faed3b8ac3b8ac4973c0bc3fbc SHA-256: 6cd6c448d7632a00d850690f6a72b34320f13066c264220ba9571d9a6ca75df2
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffine.ru/strik?utm_term=screen+recorder+apk+download+uptodown PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369311/normal_5fa20b0dc96cf.pdfIn PDF document text
    • https://sivagodumojuji.weebly.com/uploads/1/3/4/2/134235915/6028698.pdfIn PDF document text
    • https://kupanonul.weebly.com/uploads/1/3/4/6/134682697/40a5e5.pdfIn PDF document text
    • https://vikuregarune.weebly.com/uploads/1/3/4/5/134577585/bawod.pdfIn PDF document text
    • https://gogiwujuduk.weebly.com/uploads/1/3/4/3/134352159/3429804.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc6e7db3-4bf6-4a80-b662-2878ebdf4e3c/84635801640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ab3084b-8305-4ed5-b99a-c67004b82ba8/nalum.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/boxovodamadenaruloda.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/skullcandy_method_wireless_headphones_review.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/14246557490.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/134cb62e-a2ee-4d71-afa7-a598c58dc91b/37714488267.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_off0000a6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B8 5148 bytes
SHA-256: 0e1c020af86f4fbc4090972711e3ff6ece0852a196e1a026d6c2ff02b8835f1e
font_01_sfnt_off0000b861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB861 8992 bytes
SHA-256: 63beb7c8f4dd4d3bb6c050256b84e317e6b6dd735749869d1e6bfcfa2354bc16