Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6c7811b497a6f06…

MALICIOUS

PDF

67.0 KB Created: 2020-11-13 15:27:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 1bcb3d6822fc690f8e180dfb0095cd2f SHA-1: 782f00dd261088c99d6e4ef0894375afbdb938f3 SHA-256: b6c7811b497a6f068cd8e2acdb72d23e744cb0a36d3c3ef37d9159a644d369ca
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that, when visited, likely leads to a malicious payload or phishing page. The document body, though heavily obfuscated, contains text related to a "Genius g3500 battery charger manual", suggesting a social engineering lure.

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://trafficel.ru/123?utm_term=genius+g3500+battery+charger+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366027/normal_5f888ab5b9767.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416786/normal_5fae27e5dbb41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415739/normal_5f9c7140c11df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380540/normal_5f9db161722f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377706/normal_5f8ce30eaadca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405641/normal_5fae809db5b6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f9469d991e3b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dotivaf/shoqbox_sb7200_37_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4775d428-6c59-4386-8b70-f22fd4c094e4/4226982757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c79f6a03-4abc-4536-b92d-ab2c8f38bba5/9292614419.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c39f91e-f663-46aa-a48e-f5b320673b69/xenurakuliv.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/armorer_ffxiv_leveling_guide.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_off0000c4a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4A1 5916 bytes
SHA-256: e073e1ffdc159591432debb47e73842b8ca32fb98591aeaeb4714249870b1155
font_01_sfnt_off0000d8a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8A7 11324 bytes
SHA-256: 6c3e8458e73fafa4498467595d8cae584e3f90286193cd3d5590ce7824b2c01d