Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32eb08c7783a284…

MALICIOUS

PDF

88.8 KB Created: 2021-04-06 16:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b948a1d1dc1a56889f20b2973854781a SHA-1: 9dd2a686a9366f7457c505517a42c94e87713f71 SHA-256: b32eb08c7783a284b6f386ebd39a2960d5efc9e65131f5e418e71e0431bdde34
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://nipisod.ru/aws?utm_term=how+to+do+long+division+method+in+maths PDF link annotation
    • https://cdn.sqhk.co/xuxovunevo/hhhhhaF/blocky_lava_information.pdfIn PDF document text
    • https://cdn.sqhk.co/sitopizol/gjePzjg/retro_arcade_game_sound_effects_pack.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/ajbuIIo/4816400926.pdfIn PDF document text
    • https://cdn.sqhk.co/zidulibu/2UEhfii/gedoberaxozalaleniginof.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/ejMqaji/dosuvazofosavofeg.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/d3g2lbp/81725921413.pdfIn PDF document text
    • http://makamar.online/lejometoxowupugiwarewiwovx5ls3.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/hgjYvic/talogumudebonuzidukotura.pdfIn PDF document text
    • http://italiahot.space/template_for_earring_display_cardsbojy8.pdfIn PDF document text
    • https://cdn.sqhk.co/tatomaxeriri/c0Hibwv/trap_adventure_2_online_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/gilevetu/jhoijhg/real_cricket_20_mod_apk_v3._2.pdfIn PDF document text
    • http://peludofnor.fun/harry_potter_and_the_order_of_the_phoenix_full_movie_youtube_free3m4am.pdfIn PDF document text
    • https://cdn.sqhk.co/rubuxupab/ehf26Ja/puppet_soccer_champions_league_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/fNjaJia/carnival_cruise_jobs_salary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/40037911139.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/instruction_manual_for_butterball_electric_turkey_fryer_professional_series.pdfIn PDF document text
    • http://nijomabip.epizy.com/yamaha_ns10_vs_hs80.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/how_to_find_the_end_behavior_of_a_rational_function.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/folekotirerasumije.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/95360521854.pdfIn PDF document text
    • http://pejulok.epizy.com/how_to_answer_behavioral_job_interview_questions.pdfIn PDF document text
    • http://ninukak.epizy.com/zurojukowawok.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E9 5256 bytes
SHA-256: 1b3a186e2b46d554019b00437f6f12584dc30abdc2bcec8a68ea2093f76432fc
font_01_sfnt_off000118bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118BC 11572 bytes
SHA-256: de30e95427fe062cbe0f9612dfb37ac2f6f443191df0a53dd67d2cbc578dfdd7
font_02_sfnt_off00014097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14097 16116 bytes
SHA-256: 757edbe9ca696dc752e8794cc2fab55b744a24b197aba41abea0c8f583a0f3ca

Open this report in the interactive analyzer, or submit your own file for analysis.