Malicious PDF — malware analysis report

Static analysis result for SHA-256 02c1abd6bf071207…

MALICIOUS

PDF

73.9 KB Created: 2021-03-09 06:34:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9d80a4ecbdb6460179519dbdd8040841 SHA-1: 92b64b0d76e1ff34f837ea0fae9a15b16362d249 SHA-256: 02c1abd6bf07120714093a6230e87b27e024de92af234feb72793d901f6de8ae
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 0.9995

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://jottigo.ru/strik?utm_term=samsung+xpress+c480fw+waste+toner+tank PDF link annotation
    • http://liberum.sportsontheweb.net/5_love_languages_for_singles_quiz.pdfIn PDF document text
    • https://cdn.sqhk.co/jikogifuxa/iccvgft/nail_salon_near_me_walmart.pdfIn PDF document text
    • http://sutarakikim.scienceontheweb.net/what_are_the_different_types_of_mechanisms.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/learn_how_to_do_college_algebra.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwifemi/3wYDvu1/playmobil_ghostbusters_2_ecto_1a.pdfIn PDF document text
    • https://cdn.sqhk.co/daluzowinasu/ejeij6v/stylish_text_symbols.pdfIn PDF document text
    • http://gakukuketisalum.scienceontheweb.net/nujotak.pdfIn PDF document text
    • https://cdn.sqhk.co/wowixepis/PggPggG/flying_larva_game.pdfIn PDF document text
    • http://vosojivaru.mypressonline.com/90498693935.pdfIn PDF document text
    • https://cdn.sqhk.co/gadujotev/gdNODSv/pounds_to_kg_calculator.pdfIn PDF document text
    • http://zexaribamemavi.sportsontheweb.net/how_to_make_bean_bag_toss_game_board.pdfIn PDF document text
    • https://cdn.sqhk.co/dirotiweze/iPjhhiG/tai_game_exploration_craft_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fesoxuleri/f1nhfI8/smart_family_companion_uninstall.pdfIn PDF document text
    • https://cdn.sqhk.co/bekutojeke/jW3TX3j/66258154764.pdfIn PDF document text
    • http://vuvodagedene.scienceontheweb.net/the_birds_daphne_du_maurier_setting.pdfIn PDF document text
    • http://suzamajotibe.mywebcommunity.org/rode_videomic_pro_battery_indicator.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/jivagajamav/se_vuol_ballare_pronunciation.pdfIn PDF document text
    • http://sulijugofogim.onlinewebshop.net/40323645339.pdfIn PDF document text
    • http://zepizevut.atwebpages.com/pebexesurikoziwawema.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/what_is_caliban.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/ritiburadewoviposafekud.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/39365536395.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_off0000df2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF2F 6056 bytes
SHA-256: 520e31a9daa386d63a19f2b61b2f50d3fbb14755899c7c8fb239bdb4177a2dbe
font_01_sfnt_off0000f3d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D9 10964 bytes
SHA-256: c4916f1ae08576146e8d018953a200e39e5819a3836fa6c1e4d761ccdd287cb3

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