Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74ea07b157b2e10…

MALICIOUS

PDF

131.2 KB Created: 2021-03-16 00:15:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: e82249dcaac254734cd263542cff2f91 SHA-1: 0262969139cbafe6159ab66994eba1582987d516 SHA-256: e74ea07b157b2e10145ac3a70c98d55ee4fe225c3d5835900061f44b7c5207f3
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful sites. The document body, though heavily obfuscated, appears to be related to repair manuals, a common lure for phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://gimoguvi.ru/wix?keyword=amana+clothes+washer+repair+manual PDF link annotation
    • https://kigilejujagenit.weebly.com/uploads/1/3/1/4/131438309/kewofeze-piwabovaginis.pdfIn PDF document text
    • http://zisuroto.mygamesonline.org/dell_precision_workstation_t3500_service_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/pojizurigos/jbggiib/cv_format_for_sales_executive_word.pdfIn PDF document text
    • http://gubuxuk.scienceontheweb.net/word_families_pocket_chart.pdfIn PDF document text
    • https://xugirudubup.weebly.com/uploads/1/3/4/3/134332480/ditilinejima_mijilubixapag_nobetozaretip_xijuk.pdfIn PDF document text
    • http://zukilobuzoroko.66ghz.com/improving_self_esteem_worksheets_for_adults.pdfIn PDF document text
    • https://zefijevizo.weebly.com/uploads/1/3/2/3/132302816/dikuxigejazufo.pdfIn PDF document text
    • https://nusuxoxoli.weebly.com/uploads/1/3/2/7/132710665/wanowonitunef-soxovezo-puxoxomatorogid-ruwotoweladu.pdfIn PDF document text
    • https://cdn.sqhk.co/soxesemu/NLgi2ya/vumexedemewim.pdfIn PDF document text
    • http://xofitazuregokud.mywebcommunity.org/podumipuduzatujukul.pdfIn PDF document text
    • https://cdn.sqhk.co/nemalerute/iaRjic3/zero_bearded_dragon_for_sale_near_me.pdfIn PDF document text
    • http://towonededuv.medianewsonline.com/what_are_some_good_basketball_dribbling_drills.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zagupijalixi.myartsonline.com/vipifuda.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/bejoxuditetakuke.pdfIn PDF document text
    • http://namidonom.epizy.com/wugovuzuzoturotodozofi.pdfIn PDF document text
    • https://s3.amazonaws.com/xofalepelala/subject_predicate_object_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/farefasejikap/fortnite_dockyard_deal_cheat_sheet_reddit.pdfIn PDF document text
    • http://tolitaxolumupu.rf.gd/89738057164.pdfIn PDF document text
    • http://zeteximezoxa.myartsonline.com/gosoxidavek.pdfIn PDF document text
    • http://menotuzuv.epizy.com/balushahi_inderjeet_pahari_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/46227322188.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/twilight_3_full_movie_watch_online_in_hindi.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/10693433852.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A0A 51044 bytes
SHA-256: 9e9724bcb378b2c36092e78e37f8785c8aee75f2f1d369b47a3607298e0a24ca
font_01_sfnt_off0001c53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C53E 5252 bytes
SHA-256: ce2aa3f6bc925c2d4843402fb7c1e4dbbd0d436f0adaa6d003c5bd9bce2f0514
font_02_sfnt_off0001d6fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D6FB 11708 bytes
SHA-256: ab7de2ecdb8bb5f77979dda416e373f4bda80e97d3e28924ac099018a2b8250c

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