Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a17c48e3dd5c64b…

MALICIOUS

PDF

74.6 KB Created: 2021-03-09 21:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 3e834bc89764d70f5dcf6067cffe82a6 SHA-1: 87b9308b1562f75e62e6ce31d707ad9d06f99e6b SHA-256: 7a17c48e3dd5c64b27ece4da8450f41d54aaec5ef25547041c451aeabecc2e1f
104 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics as a potential phishing or malicious link. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to Vizio power supplies, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://lozipotod.ru/strik?utm_term=vizio+m50-c1+power+supply PDF link annotation
    • http://rigojakivuvemi.iblogger.org/87308972289.pdfIn PDF document text
    • http://vaxisezawoged.scienceontheweb.net/a_very_short_introduction_to_analytic_philosophy.pdfIn PDF document text
    • http://romeita.space/fodijumebizobegurefewawbapuc.pdfIn PDF document text
    • http://xidolamel.iblogger.org/40242434086.pdfIn PDF document text
    • http://helpverifybadges.com/sorukuvapambpucu.pdfIn PDF document text
    • http://fumexijana.getenjoyment.net/74773214020.pdfIn PDF document text
    • http://allostar.buzz/beats_by_dr._dre_powerbeats_3_wireless_earphones_-_trophy_goldxsrdf.pdfIn PDF document text
    • http://academic-club.ru/582372952078owf4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kawerulim.onlinewebshop.net/stephen_kings_it_movie_full_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/34645045102.pdfIn PDF document text
    • https://s3.amazonaws.com/bulujono/xezuvozalipi.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/how_to_clean_magic_filter_of_samsung_washing_machine.pdfIn PDF document text
    • http://pojitak.epizy.com/jalesosuvag.pdfIn PDF document text
    • http://pevixogojo.epizy.com/online_multiplayer_shooting_games_no_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/pefapasisosotipezuzobero.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/abc_letters_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/can_t_feel_my_face_acapella.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/tixuxipixugeziginemesetut.pdfIn PDF document text
    • http://wosolebaxuwutux.rf.gd/amharic_to_tigrinya_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/couche_tard_annual_report_2014.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/middle_of_the_night_paddy_chayefsky.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/31058982546.pdfIn PDF document text
    • http://pixutuvaw.rf.gd/sazufafovux.pdfIn PDF document text
    • http://zopusawonomiwi.rf.gd/cul_es_el_taller_textil_artesanal.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/57027653568.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_off0000e400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE400 5428 bytes
SHA-256: c67b27dd12b9fda428d20b1152f29d4d98fe952d99889b967c23e8a90b04ebe0
font_01_sfnt_off0000f69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF69B 11368 bytes
SHA-256: b04ff7d50f58f8cb137ae6271bf78a6616d079ded84e2c056e1b857ac78c7fa6

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