Malicious PDF — malware analysis report

Static analysis result for SHA-256 b08e2cc92ac32ee3…

MALICIOUS

PDF

82.2 KB Created: 2021-03-23 12:59:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: fea32c88db1cd4722877f23cb0aea62e SHA-1: 15c677a3494b387d3a0f18ef54f00dba7e9c4351 SHA-256: b08e2cc92ac32ee3859bf488c8a8b19a8ee1d16f55511c908deaac653d9342f1
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a clipboard-command (paste-and-run) lure. 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 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/wix?keyword=manual+testing+definition PDF link annotation
    • http://lotibamuzuti.scienceontheweb.net/prognosis_of_heart_failure.pdfIn PDF document text
    • https://cdn.sqhk.co/sivadapexiri/3gcs6jf/kohler_toilet_water_running_slow.pdfIn PDF document text
    • http://wetiludivarag.scienceontheweb.net/livre_pour_apprendre_le_chinois_facilement.pdfIn PDF document text
    • http://vnds-super.space/borbaad_bengali_full_movie_mp47uk2i.pdfIn PDF document text
    • https://cdn.sqhk.co/jegivoziba/hbMhj5I/68983689169.pdfIn PDF document text
    • http://finoginujowiwi.mypressonline.com/dental_assistant_interview_questions.pdfIn PDF document text
    • https://cdn.sqhk.co/toruwapelot/Bgc3hi3/vakevis.pdfIn PDF document text
    • http://urolog.xyz/how_does_justice_help_societyuxwzu.pdfIn PDF document text
    • https://cdn.sqhk.co/novozefox/kpBidVt/7886096670.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/NNiehjB/70365404780.pdfIn PDF document text
    • http://top-odejda.com/quran_pak_in_english_download3482o.pdfIn PDF document text
    • http://tamasolesodaj.mypressonline.com/gubiraku.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/Chep7ce/modern_german_anti_aircraft_gun.pdfIn PDF document text
    • http://jobs-ingenieur.best/how_old_is_artemis_fowl_in_the_first_bookhr42k.pdfIn PDF document text
    • https://cdn.sqhk.co/fadejiweruw/jj4ifMt/reapers_revenge_tickets_groupon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bolirazebaf.myartsonline.com/kixovemeno.pdfIn PDF document text
    • http://gafodix.myartsonline.com/how_much_is_my_browning_a5_worth.pdfIn PDF document text
    • http://zirutabu.myartsonline.com/best_million_candlepower_spotlight.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/22789307961.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/how_do_you_fix_a_dvd_player_that_wont_load.pdfIn PDF document text
    • http://buzanuziti.myartsonline.com/fuxonudar.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/ionic_compounds_containing_transition_metals_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/huami_amazfit_bip_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/sad_bhajan_odia_song.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_off000100de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100DE 4984 bytes
SHA-256: 9b230064dd223781aed261686751e93736f968ef67a9b49430ba809c8d867858
font_01_sfnt_off000111f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111F6 12124 bytes
SHA-256: 205102183320c78bb2a274f577cd2d42aaf88ef1f761acb92e2b72536a714d56

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