Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e89269242dc8710…

MALICIOUS

PDF

103.6 KB Created: 2021-05-01 17:29:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 677084f938b1ec7a0d7e03c2b059ba22 SHA-1: 59277a0dcc0511c2c6582a7bc4378f2b2c08055c SHA-256: 2e89269242dc87102f309d94e1ed3bd0b63e7abc78d934d9e4a001d1b16d0d5d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with many pointing to disposable hosting and exhibiting link farm characteristics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/strik?utm_term=kung+fu+panda+3+kai+theme+guitar+tabs PDF link annotation
    • https://ragidogatekanex.weebly.com/uploads/1/3/4/3/134388076/jovodifuxizovemofetu.pdfIn PDF document text
    • https://zuduberojep.weebly.com/uploads/1/3/1/3/131398404/sowuposujuzipu_luvoja_biziromuwaxif_bowisa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413126/normal_5fd78af9860b2.pdfIn PDF document text
    • http://kokilubowo.22web.org/xolider.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/jbeWjex/jumia_black_friday_kenya_phones.pdfIn PDF document text
    • http://voseboler.iblogger.org/free_midi_rock_drum_patterns.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446378/normal_6054108400464.pdfIn PDF document text
    • https://cdn.sqhk.co/sanevujaguda/jat8hgJ/15096059541.pdfIn PDF document text
    • https://roxowuvunesoneb.weebly.com/uploads/1/3/4/8/134889799/buxajas-fogise-bazomufenedatem.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416494/normal_5ffd7c708fa77.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwezomu/gcUtSeX/risk_register_form_template.pdfIn PDF document text
    • https://girusetobar.weebly.com/uploads/1/3/1/0/131071114/ef067bccd.pdfIn PDF document text
    • https://fupefasupemeze.weebly.com/uploads/1/3/4/3/134315788/gesiganalerivuw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368763/normal_6038641bf2437.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wisunabowogus.epizy.com/87963635364.pdfIn PDF document text
    • http://widafasamuj.epizy.com/42893826808.pdfIn PDF document text
    • http://gumuwojurigab.epizy.com/how_to_change_battery_in_stauer_atomic_watch.pdfIn PDF document text
    • http://getetir.epizy.com/psychoanalysis_theory_definition.pdfIn PDF document text
    • http://motuvemulavoko.epizy.com/craftsman_garage_door_opener_wall_control_manual.pdfIn PDF document text
    • http://jipowefata.epizy.com/autodesk_autocad_architecture_2014_free.pdfIn PDF document text
    • http://gokubamo.epizy.com/7714713108.pdfIn PDF document text
    • http://jisizogazojebin.rf.gd/acid_base_and_salt_class_10_notes.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_off0001339c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1339C 10144 bytes
SHA-256: 9f630289ef72c641a61d34a0d33621274f61925287a156ab1eebae7abb8167df
font_01_sfnt_off000154d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x154D1 5760 bytes
SHA-256: e523a69bde4f6d5d409ee4de07173140b28a1ac1d17c4734c2e28672f7dfbb7c
font_02_sfnt_off00016849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16849 11876 bytes
SHA-256: 540faa9cbcbd2c0e8dc07eee974dea5845ea0db841bfe7ecc2a6755183946da7

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