Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ee2dadfd0a1f23…

MALICIOUS

PDF

66.4 KB Created: 2020-12-20 10:59:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d9e225b1a2e7bf1f521be10fb0bf2f90 SHA-1: 71feef461283b7b1540f6793603814f6507f2d07 SHA-256: 14ee2dadfd0a1f23ea5d7d7aeac1ad7ebc9b3e2b40bae5d408b8c3d7945bfe0b
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a link farm, with multiple external URLs pointing to PDF files. One prominent URL is 'https://trafffe.ru/123?utm_term=handless+millionaire+2', suggesting a phishing or scam attempt. The presence of embedded URLs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate malicious intent, likely to redirect users to malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffe.ru/123?utm_term=handless+millionaire+2 PDF link annotation
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/7959581.pdfIn PDF document text
    • https://letazofuwukuge.weebly.com/uploads/1/3/4/8/134869061/3212b415d53c99.pdfIn PDF document text
    • https://mizavuzozubex.weebly.com/uploads/1/3/4/7/134730625/4145740.pdfIn PDF document text
    • https://mixorone.weebly.com/uploads/1/3/1/4/131438240/b6b7af3aba1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5db0916f6d44b07e08f00/t/5fd185a4871f8c6e5954735e/1607566758814/79896347372.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b0585426f52a30e09280/t/5fd02b08125f6a657a43acbf/1607478024408/wenegaxi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0873a11f6a4198483d0f6/t/5fc61c93a97599144ec9f6a2/1606818964799/ferivenenikiwafusakal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe1d3cfa04221c71e93906/1606294846403/rowedowiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14ad0dee-bff0-4fb2-ba6c-b3d0fee364b9/modern_pattern_design.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ad58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD58 5064 bytes
SHA-256: d4e86d1253a1a14662b0f1da2cf30467ba690d4b7faddbe9ade6945689e95bb7
font_01_sfnt_off0000be72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE72 14372 bytes
SHA-256: dca8d390865d25c60cb991e1ac5ad03906a7d3657fb7cc38cf99986e2257a393
font_02_sfnt_off0000e658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE658 16208 bytes
SHA-256: f72d97b488128c9c8c04bfa790bc9577734004cccc4167480d5e983952f576a6

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