Malicious PDF — malware analysis report

Static analysis result for SHA-256 627bb521232c07ba…

MALICIOUS

PDF

76.5 KB Created: 2020-12-20 21:09:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 60a67c23f18c15664c091019b87a6c49 SHA-1: df411e2e2a7b5012d5313e92c7781032dc2ff6d5 SHA-256: 627bb521232c07bac48f39ef15f5d2c9a429a749dda8dc08ea999c8b3b464376
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-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://traffking.ru/123?utm_term=ef+bf+bd+java PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427820/normal_5fc2dd3acac3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378619/normal_5f918c1262bc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484835/normal_5faf36bceff58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469136/normal_5fab5ae8a1a7e.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/afecaab6-2c08-47dd-9774-4fc6c7878f99/torol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e575164a-c704-4c84-9626-8cc530d94a3b/pazepidanarukate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7242ddbb-d90b-4ccc-a878-93c781d43ef7/crazy_frog_ringtone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8609ec82-9d13-4838-9fa7-212b59d90a0e/how_to_uninstall_wow_addons.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45eeffc8-f908-40ac-b1b2-b9cbe99e6d45/mibokiguwovupifuwupat.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/wuwoma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26fc7d15-a301-45c6-aded-ae5e7289822f/sifogazeralaxitefisu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c747f07-a786-4e88-baeb-f9f3e1b11f7d/lofovomos.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_off0000dc59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC59 2964 bytes
SHA-256: 8c1634c5a4dc18a08a002e44864c65c457d4d4b3b32edbd4e440938177c5338d
font_01_sfnt_off0000e6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E5 4828 bytes
SHA-256: be107f6986733576ad8b0c7a6c4c11da9460ebba7ce8e6e098acc55e405b0387
font_02_sfnt_off0000f77a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77A 13420 bytes
SHA-256: 509649339f4fcf12eef09777bb96603152121cc60890a2e0dca451576dd220fd