Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf424dec4a8d806…

MALICIOUS

PDF

75.6 KB Created: 2020-11-25 11:50:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e882d6bf1d0716650babb596f30b367f SHA-1: 10e7ec77094286893a2ca00ff172e13783c13a2b SHA-256: dcf424dec4a8d806587d3aeb69c1a62930e2d71763070a8a4e5fe266778f3b48
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://traffking.ru/strik?utm_term=central+dogma+and+genetic+medicine PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5f9064829cd5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387590/normal_5f904d957bd39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379474/normal_5fa49e7de74cb.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/363bda34-54c8-47ec-83db-0133e1961aac/44914800972.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b851be-bf6d-4241-94ee-06b6e1c4f390/sony_alpha_slt_a57.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77ef6d94-57e8-47e0-b0ea-bd10af01f0d2/juvisivugiput.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f342474a-2633-4325-ac70-2555e9d72ddc/chillingham_castle_owner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a78ddd57-07a7-4f3f-a9bf-98397205a4b2/gesidazazabevedidiwak.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/11647561380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87107ae5-fe3e-40b7-b205-42301e2b2bd9/tosetat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cec59c74-fcda-4056-94fb-178ed92c5cf0/ribovusawoboxupupawusaki.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/dixijuru.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_off0000eb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB01 4988 bytes
SHA-256: 1f7cdf6c3aaf580d2021d928816f1f159f109feb10842de1e9195e68e896014d
font_01_sfnt_off0000fbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBDE 11136 bytes
SHA-256: b8084007405cd0bef2ce7c91106376dc82d6b9e6305733f1b4dc77495e84854b