Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7477b8549586dd3…

MALICIOUS

PDF

69.0 KB Created: 2020-12-24 05:26:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e747ca9489375cbaa67744a3a07469e2 SHA-1: 1d0a6c77c167509afebe805e8c2af5c630b29bf7 SHA-256: e7477b8549586dd30c2404abf341f391e82ed02e7f12d438eaa73c24513c035d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://traffking.ru/123?utm_term=dnd+animal+companion+5e', which is likely a phishing lure. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, consistent with spearphishing tactics.

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://traffking.ru/123?utm_term=dnd+animal+companion+5e PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370055/normal_5f97c5b7310ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379616/normal_5f8c002e0597e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418987/normal_5fd5fa6789d5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_5f97de8d8c10e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382784/normal_5fb70ea830395.pdfIn PDF document text
    • https://cdn.sqhk.co/sulojumi/dAjjhbS/50668087977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404976/normal_5f951770eba0a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381971/normal_5fcee649e33c9.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/b31f74d0-3edc-43a8-9bc0-2656e57b0bfb/varaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb4a0180-ce97-4ed0-b8ed-2d542a0546fe/26295283760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a97e12b3-f784-4536-ba09-cb33c0cd58e1/gaxitibilulujejapelosig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9df3d32a-8476-4dbd-ae4d-46e711825d3c/game_of_throws.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/074e0570-b03d-4577-9243-46905bc1372c/bonigomefatujuzabupatil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d772445-dde6-4fc5-91c1-52d4c3053921/engaging_writing_2_book_download.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_off0000d313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD313 5068 bytes
SHA-256: eae05ec7202f7cbe6e33d225b8ba59e8bd79cc91942bce9517cf61bf566451d4
font_01_sfnt_off0000e44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44B 10280 bytes
SHA-256: af90a1fc26d76386414f091f7fcb2234a283fa6e538f8941b555d64494883c4d

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