Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ceb4b47e31bd614…

MALICIOUS

PDF

78.6 KB Created: 2021-01-13 14:49:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5a739ccd3c6dc93bf898e33b1d873bb7 SHA-1: 963827464efc33f74c4134f3f4a9e1f8e62a489d SHA-256: 4ceb4b47e31bd614e8f5b8781b260937c56e2e54cae716751fe4ae8d040cbc0a
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafffi.ru', which is likely part of the attack chain. The presence of embedded URLs and the high confidence scores from detection engines suggest a phishing or malware distribution attempt.

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://trafffi.ru/aws?utm_term=sqlite+datetime+column+format PDF link annotation
    • https://site-1175261.mozfiles.com/files/1175261/chatous_camera_not_working.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476282/normal_5fcf046a7cf8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367950/normal_5fc7f24c15f63.pdfIn PDF document text
    • https://cdn.sqhk.co/pixisuja/dAgiIRK/mobile_payment_application_development.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387821/normal_5f95b33217994.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/hgecjjp/75448779232.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449618/normal_5fcea24483ff5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380228/normal_5fdfc9a08945f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488807/normal_5fc38504aae42.pdfIn PDF document text
    • https://site-1166675.mozfiles.com/files/1166675/tibunawoduje.pdfIn PDF document text
    • https://cdn.sqhk.co/menasimax/ge3hfjd/vusovolanafosigiv.pdfIn PDF document text
    • https://cdn.sqhk.co/kibedutej/jajhchf/ielts_vocabulary_play_games_to_learn_spanish.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530937/normal_5fd7d28773903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5f90dfba24983.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404512/normal_5fdfb8ef3389e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F7 5100 bytes
SHA-256: 4eb1b8843dc5f91720cf63f5da5384475550a8390b453f4cca05f484cebc3424
font_01_sfnt_off0000f82b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82B 11536 bytes
SHA-256: 58926a2e765470764d9b10c9021b196d753179d297b65b1485be570253a10c7b
font_02_sfnt_off00011f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.