Malicious PDF — malware analysis report

Static analysis result for SHA-256 00a08c6ac20ce96c…

MALICIOUS

PDF

70.2 KB Created: 2020-11-17 01:19:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: c18f8e2e264acbd35d698f3de18e28bb SHA-1: 11ee652cbccc2d532f1c56d4a82c4c76f027fa13 SHA-256: 00a08c6ac20ce96c039628a2c0f49be08dc1deb2d5a30c66aa8925de8fdc0aa8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a yogurt maker manual, likely to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF. No scripts were extracted, but the presence of an external URI points to a phishing or credential harvesting attempt.

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=epica+yogurt+maker+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485818/normal_5fa7aa720f797.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462341/normal_5fa5a8d3681a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407747/normal_5f93762c25a03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370309/normal_5f8fde06bbc00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417046/normal_5f98286d1f321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473622/normal_5fa6014c23d3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392860/normal_5f95349229246.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/85aeae6f-b274-4ff7-89f1-c217405dcba5/19744830296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fb8a7e7-7652-4bd7-87f8-3d20d6d1ee3f/zukak.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/dd_mental_disorder.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/19240381391.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9712ccea-67e0-4b42-8be4-2d31acec6dc3/61225460762.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/52832406023.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/leboja.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_off0000d619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD619 5196 bytes
SHA-256: 6e0855add7b47ce4348ece41a1037fa0c6ebfd22528a273305729f32009d374a
font_01_sfnt_off0000e7cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CB 10504 bytes
SHA-256: 72035e2a52a6d3671fcdea562d9604c5365c0ea44a465c63620461add1a078d7