Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a463d8d2223e174…

MALICIOUS

PDF

67.8 KB Created: 2021-02-17 02:21:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ef1e4d09d3e4b4723d7caca91d52af71 SHA-1: 42caad560f77fc6dc0806e642b84eb2e4135021f SHA-256: 4a463d8d2223e1748e2fd13dd18c4bdd52c4c0a7c3e50d0e043c6b76b13c67a9
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://bologen.ru/wix?keyword=exit+ticket+verb+tense+consistency+worksheet+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5fd3d8ea393cf.pdfIn PDF document text
    • https://kisujaxu.weebly.com/uploads/1/3/0/7/130775962/f8cce6e4b209a5.pdfIn PDF document text
    • https://gepavemu.weebly.com/uploads/1/3/4/8/134861499/gewunitikitoxaw.pdfIn PDF document text
    • https://wotawodakel.weebly.com/uploads/1/3/5/3/135316359/memujago.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405953/normal_5fe0d43799f31.pdfIn PDF document text
    • https://refapezi.weebly.com/uploads/1/3/4/9/134904673/sinubimi.pdfIn PDF document text
    • https://cdn.sqhk.co/gapalagabig/jeZ4ahd/28179998482.pdfIn PDF document text
    • https://dagaroxir.weebly.com/uploads/1/3/5/9/135973008/norewisidavutak_zakidejati.pdfIn PDF document text
    • https://kunipasufit.weebly.com/uploads/1/3/0/8/130874165/e754aa6f350d.pdfIn PDF document text
    • https://texotawumixiwaw.weebly.com/uploads/1/3/4/8/134898612/4722239.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369493/normal_600412da3ed21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479470/normal_5ff4d0a01c000.pdfIn PDF document text
    • http://zanexipizuzog.iblogger.org/polaris_predator_500_carburetor_tuning_guide.pdfIn PDF document text
    • https://gotedajasokidu.weebly.com/uploads/1/3/1/4/131407980/7246783.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poziluxolebulu.epizy.com/anaconda_prompt_python.pdfIn PDF document text
    • http://bakenexiradofo.epizy.com/everton_injury_report.pdfIn PDF document text
    • http://pukowevuvifa.rf.gd/13842266003.pdfIn PDF document text
    • http://wesonujojamoga.epizy.com/baby_driver_tamil_full_movie_filmyzilla.pdfIn PDF document text
    • http://poxipepeti.epizy.com/peniviti_kaala_bhairava_song.pdfIn PDF document text
    • http://lojosikol.epizy.com/8663246737.pdfIn PDF document text
    • http://dapuzuro.epizy.com/15653457918.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_off0000cc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC55 5484 bytes
SHA-256: bf0854735296ed9a9c34326ba9f2b1a86264a47c709b49139743975e0d1b6432
font_01_sfnt_off0000df1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1D 10252 bytes
SHA-256: fa4ca0f39a23e3166e677d4dcd38cf0be1a03222813b198b8c4b8123144928c4

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