Malicious PDF — malware analysis report

Static analysis result for SHA-256 a581beb56239aee1…

MALICIOUS

PDF

71.7 KB Created: 2021-01-05 19:33:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: f807e778b190fab7ac13306a28562d8c SHA-1: 6e4346a781a976e466cfb0fcfaceb4ad89c744fc SHA-256: a581beb56239aee13c5a693b4b41501743a3d5553224d7edaed4bb081e16b335
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'traffmen.ru'. This URL is part of a link farm designed to redirect users to potentially malicious content, likely a phishing or scam page. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/aws?utm_term=netflix+on+android+tv+box+for+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366620/normal_5f954f75a06e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460690/normal_5fe9956b02475.pdfIn PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/fedabolitode-suduxonepowomo-sigidutipiwikew-pelilamom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417980/normal_5fb4917d87233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_5fd6ef6ca2c4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464871/normal_5fc969251fd9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416671/normal_5fcbe815e90ff.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/xukirizugukugi/weather_report_venice_louisiana.pdfIn PDF document text
    • https://s3.amazonaws.com/badodemebo/canva_google_slides_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/setup_dvr_for_iptv.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/gel_electrophoresis_virtual_lab_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/37502385037.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/5368450669.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_off0000dcd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD8 4960 bytes
SHA-256: c23b5e6e293ca126283209a051903c12f54ac6584254cfd8d5ec6d960a55da59
font_01_sfnt_off0000edd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD5 10680 bytes
SHA-256: 1eccda81679d285a8ec0bab3ac895faf5af6e71e3c7a8c309042b6e6a9a6ba78

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