Malicious PDF — malware analysis report

Static analysis result for SHA-256 62c54c4f348e3ae6…

MALICIOUS

PDF

69.3 KB Created: 2020-12-06 01:08:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4e128226cd147075cebaecc6e56204d4 SHA-1: 9c7dd484e85eb7a4fa3d6408ae9b30456d7d7260 SHA-256: 62c54c4f348e3ae660bc59341496e92d2f70f21dcc25540fb423378f73ed7211
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 0.9998

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
  • 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://trafffi.ru/123?utm_term=amex+platinum+airline+credit+flyertalk+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368976/normal_5fbe0b11a7f85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372360/normal_5f90b91ecf7f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485457/normal_5fb8b7f5d48e5.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/d7ff0c45-64a5-4667-bbd5-2494830b7e9d/60480816083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d157cc02-7705-48c3-bee7-3c6e8fd4ddac/61976624474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1765e94-f5aa-4985-a303-f0a89a844b91/8345437525.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0230ac89-9471-4373-b1f0-6c3cc62eeec9/tobisizu.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/xatipejivopofazixedal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/152b6cc5-6b8f-4bce-8fba-d337fe827626/91576511003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42db55cd-a291-4fdc-9f03-8a3d46105c60/37537326525.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a6ba21c-831f-44fb-9084-3c337e020f53/54298751546.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0feaf0a2757459be36412/t/5fc2ef6418e72e5fdb392e95/1606610789520/jumerozi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85fcf326-b0b1-47ae-af28-104754ef274c/27939940709.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/install_apk_without_bluestacks.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_off0000cf7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF7A 5828 bytes
SHA-256: bf7a0e9e34cdc52244231a26d1f510f3afb4ae8f6b862ee5be337a1184befb8c
font_01_sfnt_off0000e358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE358 10784 bytes
SHA-256: 9cf9cfb3ec6c50d5f521b5c9cc3176518ec0d69416e7182a63c93954bba7ca6b