Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7e792abd6faaf6d…

MALICIOUS

PDF

69.9 KB Created: 2021-01-05 21:33:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0595954931cd283acad76e6703df252a SHA-1: 7443660d6c19627b786026f5bb1b0036afc5873c SHA-256: a7e792abd6faaf6d007c5b9c78ceabf6d6526d81b8d54d67d8c13d140584e4c5
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit user trust by masquerading as a technical document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=multicast+listener+report+message+v2+wireshark PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4482636/normal_5febdc78bfe08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448727/normal_5f9db887b695f.pdfIn PDF document text
    • https://nugaginidej.weebly.com/uploads/1/3/4/4/134475369/6808455.pdfIn PDF document text
    • https://widubemevojapo.weebly.com/uploads/1/3/4/3/134320166/4750268.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/Chbfhc9/29526563703.pdfIn PDF document text
    • https://cdn.sqhk.co/fololekumi/jfGjbhg/tunemuwaworozepuvuw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447888/normal_5fc4bf50e0717.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/0b7f1ebc-270c-4a98-9005-5e7c9140dda0/63894286383.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8af815f7-8713-4ee1-bd00-7e34dd6d9e53/how_to_summon_lightning_in_minecraft_with_a_command_block_bedrock.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/719dd62e-ed40-417e-a073-6efebf74daaa/xunuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f877f2fd-0425-4cb6-9986-4118825617e9/budolubod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d350db94-a74f-4d32-8a6a-06976d3b79e8/exiled_kingdoms_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_off0000d33e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD33E 5700 bytes
SHA-256: 5f1be72cb761c799dc624f6c01e83e6557e7d537a892b291341110f8ec83166f
font_01_sfnt_off0000e697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE697 10672 bytes
SHA-256: 840b297d035f62ff2402fcc2987a38c97eba9ae5ca0e3eacd71694bf3bffc7ae