Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b7ac8dbc1ff865…

MALICIOUS

PDF

77.8 KB Created: 2021-03-14 14:07:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 4cc8f7039cc005746ed859499029b551 SHA-1: 7f4a735b0e2baf42117e396e1892303d7a0f3343 SHA-256: a0b7ac8dbc1ff8658651db487bb37ff6cee5952f9d5583a52dbc1812e1b1ae54
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL designed to trick the user into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL points to a domain that is not confirmed benign, suggesting it is the primary lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/award?keyword=inventory+management+and+budgetary+control+system+pdf PDF link annotation
    • https://cdn.sqhk.co/mujawiru/ujhjibq/89456006350.pdfIn PDF document text
    • https://cdn.sqhk.co/worupageke/hcshatz/68573728357.pdfIn PDF document text
    • https://cdn.sqhk.co/lajagika/ijjd8i9/dhoom_4_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/qibijCU/82556390554.pdfIn PDF document text
    • http://eushopvmn.site/how_to_start_business_in_pakistanrdq2o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468531/normal_5ffbc6a00a139.pdfIn PDF document text
    • https://cdn.sqhk.co/kubibosujiko/7jfhdji/rupijijekizigisuw.pdfIn PDF document text
    • http://stassikorskyi.com/aircraft_cruise_performance_chartsg1dyz.pdfIn PDF document text
    • https://cdn.sqhk.co/mutuwatu/rhdgiia/gumball_super_slime_blitz_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454286/normal_601de6ca5b341.pdfIn PDF document text
    • https://cdn.sqhk.co/kerodamajop/idigieL/fast_food_industry_report_australia.pdfIn PDF document text
    • http://livethailand.fun/belofixuzavogivitor35xw.pdfIn PDF document text
    • https://cdn.sqhk.co/vinogusi/0rhcFhg/galaxy_shoot_alien_attack_space_shooter_game.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/d5hddip/college_football_players_40_yard_dash_times.pdfIn PDF document text
    • https://cdn.sqhk.co/pesasotiro/w9u2icy/sonny_s_menu_prices.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0317f8a9-bbe2-4759-a8b3-fc8687c1b565/luxijujes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d367962b-9cf5-4f10-bc55-6301eada186b/why_was_the_decision_in_brown_vs_board_of_education_so_broadly_significant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e87d6e0-da49-4e92-adc9-6b31a9c112f6/xazupunop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992ad8bd-b017-4fea-b484-ae400a9ae3e5/how_to_get_tracfone_my_account_app.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_off0000f3d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D4 5712 bytes
SHA-256: a6a981fd873d621005b56d4d5ac43dcacd7bdc30c3a092345631964c7c595e21
font_01_sfnt_off0001073b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1073B 10140 bytes
SHA-256: 04be2075cdfa0e581aebb2a20e8738ed5cfcbf2416ddfa134a2ab35fb34da7d8

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