Malicious PDF — malware analysis report

Static analysis result for SHA-256 20608f01a1176d6a…

MALICIOUS

PDF

71.8 KB Created: 2021-02-13 17:31:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e471eef2d2b25b7bcc7839e46a6d95af SHA-1: 5b93aefe03f997d774ee138cf0f4913328d368ce SHA-256: 20608f01a1176d6ae7e814d52ddbfffd3a4f5fe832f0d5f4b8056db6ddac2870
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing or malware distribution lure. It contains numerous embedded URLs pointing to disposable domains and potentially malicious content, suggesting an attempt to redirect users to harmful sites. The presence of external URIs and a link farm structure further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jacksth.ru/wix?keyword=jim+beam+suite+2019 PDF link annotation
    • http://probmake12.xyz/bigfoot_finding_hunting_survival_game4sddt.pdfIn PDF document text
    • http://toppiksnack.xyz/3d_puzzles_crystal_lionv5y3q.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/iiPXEek/tejuxuwuwujezakalefiletun.pdfIn PDF document text
    • http://kipivejezijab.iblogger.org/happy_birthday_song_naa_songs_telugu.pdfIn PDF document text
    • http://hargotel.xyz/tujibonbdt.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/geQqgj9/you_look_like_gradient_celebrity_look_alike.pdfIn PDF document text
    • https://kapelivoxiri.weebly.com/uploads/1/3/4/0/134040857/rixezusiduxuxo.pdfIn PDF document text
    • https://zovakobazala.weebly.com/uploads/1/3/1/4/131456363/3017474.pdfIn PDF document text
    • https://roriwemako.weebly.com/uploads/1/3/4/5/134599113/3424712.pdfIn PDF document text
    • https://minileponefij.weebly.com/uploads/1/3/1/0/131070526/5b285eed3f.pdfIn PDF document text
    • https://cdn.sqhk.co/wujejelot/agcmpXg/nokumezolumu.pdfIn PDF document text
    • http://kugenezajiz.22web.org/48043085486.pdfIn PDF document text
    • https://rifijilaguselud.weebly.com/uploads/1/3/4/8/134846829/b5e13cd3.pdfIn PDF document text
    • http://leree6.club/uh_60m_flight_line_supplement4dytf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rimadijek.rf.gd/jobetibojozaju.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/zogotofumaluzinubesan.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/fatirob.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/converting_litres_to_ml_worksheet.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_off0000db11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB11 5316 bytes
SHA-256: ca401910f37e1893a8182798df4927b21fa61ed3705877d1ad743f1a59d2fd32
font_01_sfnt_off0000ed13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED13 11012 bytes
SHA-256: ba06ce2923f1150831ae6d1a273c1bf3cefa1fd022a01adb33d7fb891141263a

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