Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69d611c31b3a7fb…

MALICIOUS

PDF

80.0 KB Created: 2021-02-23 08:21:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 320a218b877ea84ee84a428d3d36c4a4 SHA-1: b742dd810a276b4d0f139af91c63091ebd81442e SHA-256: b69d611c31b3a7fbb3c1d228dd81120ba5b9b29a72fc120b3cd183298a165012
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and is identified as a link farm on disposable hosting, indicating a malicious intent to redirect users to potentially harmful sites. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://baarspo.ru/123?utm_term=java+ee+8+examples PDF link annotation
    • http://gakmancreatures.ru/analytical_marxism_roemer0zaqr.pdfIn PDF document text
    • http://detonic-shop.website/casio_graphing_calculator_fx-9750gii-we_manualehiqb.pdfIn PDF document text
    • https://cdn.sqhk.co/zupuguvawaj/gjaEC2h/guess_the_movie_theme_tune_quiz.pdfIn PDF document text
    • http://maska-respirator.com/jowaxipawuluzubnzu0.pdfIn PDF document text
    • https://cdn.sqhk.co/fupokiwil/a7iiGgd/murderer_online_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/h4PpUje/don_t_rush_dababy_genius.pdfIn PDF document text
    • https://gopadafuwidu.weebly.com/uploads/1/3/0/7/130740623/nazowez.pdfIn PDF document text
    • http://buytoday.cc/6351705849566cgv.pdfIn PDF document text
    • https://rabidibizuzej.weebly.com/uploads/1/3/4/6/134648686/9460321.pdfIn PDF document text
    • http://banquepopulaire-fr.org/fatunoxal9k7qq.pdfIn PDF document text
    • http://whalesqpa.fun/keto_diet_foods_list_for_beginnersajv7h.pdfIn PDF document text
    • https://zogoporev.weebly.com/uploads/1/3/1/3/131381602/rivotomififidi.pdfIn PDF document text
    • http://worldhold.online/morpheme_exercises_with_answers4zufb.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/hZheOib/nozavofovu.pdfIn PDF document text
    • http://rodsfish.club/jipasiwivepekevaxtl4q4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wivoruremuwun.rf.gd/90321607366.pdfIn PDF document text
    • http://dotimazuf.rf.gd/bf_skinner_operant_conditioning.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/everfi_module_2_answers_final_quiz.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA6 2960 bytes
SHA-256: 3c6502e04658d985b37ed967139d4b1bb7136c1c8ff06868e6b64c17630b7d50
font_01_sfnt_off0000fa29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA29 5180 bytes
SHA-256: 20720d1bb61e3efe7c497907ae43b6e5e2df870a6b3c6f3319fd2fca1508ebaf
font_02_sfnt_off00010bc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC6 11324 bytes
SHA-256: 9529ffe30bd7e3e4b9aeb18ce0f07b1312d19a9721ca391b30a5ce5173a78c92

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