Malicious PDF — malware analysis report

Static analysis result for SHA-256 29384a8257b47dcd…

MALICIOUS

PDF

80.4 KB Created: 2021-04-25 09:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 81b716e60641012afbfa92f3b2232553 SHA-1: 22bd80ca9a46c879b3e54440835c1f4b281c30d1 SHA-256: 29384a8257b47dcdf63cd207f6a64c59fa16f5ee41a6ccbd126b5f87ff428f75
126 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, identified by heuristics as a link farm and flagged by ML and ClamAV as malicious. The document body, though heavily obfuscated, contains text related to a 'Pioneer avh-x2600bt navigation' which likely serves as a lure. The presence of external URIs and the overall detection by multiple engines strongly suggest a phishing or malware distribution attempt.

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://xajibur.ru/strik?utm_term=pioneer+avh-x2600bt+navigation+afficheur+%25C3%25A9teint PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4472488/normal_60395e1cd214f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393483/normal_601a38864c1b7.pdfIn PDF document text
    • http://sudesisobibimit.22web.org/pijuniwafisuwamizageb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_6011db2b7a8fb.pdfIn PDF document text
    • https://cdn.sqhk.co/wetabupi/f9jjGgU/animal_restaurant_takeout_bells.pdfIn PDF document text
    • https://cdn.sqhk.co/jelasusoved/d3sipij/zidadizupenitivi.pdfIn PDF document text
    • http://gufutaca1.xyz/nda_2020_exam_paper_downloadva9h9.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/oihhhhI/xufamuxizugozelarusaro.pdfIn PDF document text
    • http://optarfes.com/20020853914ezaae.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/7hhhghd/mr_love_queen_s_choice_anime_ending.pdfIn PDF document text
    • https://cdn.sqhk.co/pidikuso/fVPji6G/zozelodoteletarepimu.pdfIn PDF document text
    • http://zoziwasikow.22web.org/which_is_the_best_web_hosting_provider_in_india.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6d428a25-da86-44fa-8f13-5b0f09742281.filesusr.com/ugd/3649d2_2fe054b06b104b47bcbdbcdf9e93fbc3.pdf?index=trueIn PDF document text
    • http://vosezonupufix.epizy.com/algebra_2_questions_and_answers.pdfIn PDF document text
    • http://potelodifudoduj.epizy.com/bujipevojuvowusob.pdfIn PDF document text
    • http://vonanovab.epizy.com/dokurubugubipizafiremogi.pdfIn PDF document text
    • http://bovaxibeloxev.rf.gd/september_2020_calendar_editable.pdfIn PDF document text
    • http://webukoxaxox.rf.gd/microsoft_project_2019_for_mac_free_download.pdfIn PDF document text
    • https://c534e673-b245-4a6d-8787-855fe96db707.filesusr.com/ugd/e19215_a122aa26b69a47608763a95e9a66797a.pdf?index=trueIn PDF document text
    • http://faletabud.epizy.com/23622761471.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_off0000f5df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5DF 5804 bytes
SHA-256: 1dd7db971a5a8acc1dc280e5416e35a2a50758fa39b49b9313f1725cf6886421
font_01_sfnt_off00010977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10977 12288 bytes
SHA-256: e114803d5bea7e1f2a5e14a59848cc6da7dc6686e28b129bfe0e92283df23593

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