Malicious PDF — malware analysis report

Static analysis result for SHA-256 96624ee72127a874…

MALICIOUS

PDF

85.0 KB Created: 2021-03-16 05:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb68a5bf80e120cc25d1d52df763ced2 SHA-1: e898fddb611e0521559ad0d3cba0a2d782d92f21 SHA-256: 96624ee72127a874453ab49c6158618e57ec4baab6e783435f0f86fd3c601733
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('xezojetit.ru') that is likely used for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

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://xezojetit.ru/aws?utm_term=schumacher+model+sc-1200a
    • http://wamumuv.iblogger.org/87661094750.pdf
    • http://bluebadgeform.com/marozefekobokinikepafejegmin9.pdf
    • http://lbaranaydin.com/burning_red_spots_on_legs6tmwj.pdf
    • https://static.s123-cdn-static.com/uploads/4473632/normal_5fcac918a774c.pdf
    • http://jofarofuwudeveb.66ghz.com/heartbeat_bts_sheet_music.pdf
    • http://govnososal.xyz/Dutch_audio_tracks_for_moviesb40rd.pdf
    • http://gonzo-3d.com/manual_of_systematic_bacteriology_volumeewpom.pdf
    • http://forsage.pw/98188533739ziyl5.pdf
    • https://cdn-cms.f-static.net/uploads/4369501/normal_60414e4047a3c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nigimul/dijelezozi.pdf
    • http://folizel.epizy.com/assamese_status_video_vivo.pdf
    • http://jabepujun.epizy.com/shell_advance_ultra_10w40.pdf
    • https://s3.amazonaws.com/somamere/2012_polaris_ranger_800_crew_front_differential_rebuild_kit.pdf
    • https://s3.amazonaws.com/remavuj/gospel_of_the_twelve_holy_apostles.pdf
    • https://33c7e2ec-32fc-4676-a642-9d95a4379e01.filesusr.com/ugd/622218_0d3c63539f034219b1f89f02495cc620.pdf?index=true
    • http://segudufarus.epizy.com/pokemon_adventure_game_free.pdf
    • https://e3835a62-9136-4977-a4f2-b11bebb7289a.filesusr.com/ugd/7ad284_745316f96b2b4972a2177a842fe0a325.pdf?index=true
    • https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_5c24ef470a0c45b8b3322c5624560bf1.pdf?index=true
    • https://ae0ecf71-49bb-4ac4-bba4-d0f2a20d1af9.filesusr.com/ugd/668a47_f59998a3a1d94d98ba279e19a7ec9514.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d4e.bin
c0ee2a6e7cb598019245263a234757b4c929ed67731fc6a66545dd8c55dd5df8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4E 5640 bytes
font_01_sfnt_off00012056.bin
edbf03506fe6280ec06053a3ddf2847568f27a7b4d1eb0767406d2e93d9db02f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12056 11460 bytes

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