Malicious PDF — malware analysis report

Static analysis result for SHA-256 11c2f7bce1bdac07…

MALICIOUS

PDF

80.0 KB Created: 2021-03-30 13:35:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 64e34b73d441bbfba4667ee5a6dcf463 SHA-1: 757f9b80dea9127ef414da61d676dc8135385ad6 SHA-256: 11c2f7bce1bdac079dd8e155838146d22a07754f97986cb711cb703358253014
116 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded external URI pointing to a suspicious domain, mezovuduw.ru, which is likely used to host a phishing page or distribute further malware. The presence of a QR code lure heuristic further supports a phishing-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://mezovuduw.ru/123?utm_term=anolis+carolinensis+care+sheet PDF link annotation
    • https://cdn.sqhk.co/rerunaropiz/cjcRxHt/satuzapaguwur.pdfIn PDF document text
    • https://cdn.sqhk.co/tesigasefaxe/ckxhMhg/6405575542.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420434/normal_6000446317028.pdfIn PDF document text
    • https://cdn.sqhk.co/nosimasiv/eQojbeu/dragon_online_3d_multiplayer_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449187/normal_602c20a58012f.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/heOAidC/fidedegidurebigatekajadi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_6052d0369d0c0.pdfIn PDF document text
    • https://cdn.sqhk.co/kovezozeseg/gggjhjd/xufuzupad.pdfIn PDF document text
    • https://cdn.sqhk.co/fivufotimad/G5hjYih/phoenix_weather_january_24_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402936/normal_6010d3524ba06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418166/normal_604d11e473ff5.pdfIn PDF document text
    • https://cdn.sqhk.co/wakewafo/yihihWj/47680588851.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415046/normal_6044cf6316c4e.pdfIn PDF document text
    • https://cdn.sqhk.co/felodunom/fyjaGje/afterburner_overlay_destiny_2.pdfIn PDF document text
    • https://cdn.sqhk.co/gawagunikuw/Hvjd7Oe/2010s_movie_trivia_questions_and_answers_printable.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462352/normal_5ff7bb63246a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501367/normal_6031ae738ea4f.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/Anjjjf3/wesopudesuvamomidulamoduj.pdfIn PDF document text
    • https://cdn.sqhk.co/giripiponi/AHhgnhf/feduguxavilagakimekobewef.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/Agjigf7/most_rare_pokemon_cards_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/0iniaje/geometry_dash_2._2_level_editor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443354/normal_6010f7bca244f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/us_army_acu_uniform_pants.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/22434623338.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/jandy_aquapure_1400_troubleshooting_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/film_worksheet_raging_planet_hurricane_answers.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_off0000ecf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF1 4664 bytes
SHA-256: cda2d9e21138fa5fa0648cdc505d0f6142d21dfdbbd44dbe7d6a2d529abef274
font_01_sfnt_off0000fcad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCAD 11996 bytes
SHA-256: 0a3ef04db22d4335910bcbf2aefed252e248ca461316664cfe56b3cb6a6be99e
font_02_sfnt_off00012459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12459 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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