Malicious PDF — malware analysis report

Static analysis result for SHA-256 33109a96ed4fb0f2…

MALICIOUS

PDF

79.5 KB Created: 2021-04-05 08:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 893a309cee9699d8196b8e42bc03af25 SHA-1: 1e611c8d26563efcb6ded8d29a624babd77a8d93 SHA-256: 33109a96ed4fb0f2464b573609d2f2dbe93cb667af5d276e091420a8edc2124b
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/wix?keyword=we+were+liars+pdf+vk PDF link annotation
    • https://cdn.sqhk.co/noperizapewo/gidLOhe/7302261238.pdfIn PDF document text
    • http://vedivux.mygamesonline.org/mebariviki.pdfIn PDF document text
    • http://naziniza.22web.org/29845778129.pdfIn PDF document text
    • https://cdn.sqhk.co/sesijisova/cheul4Z/razamujomipovoz.pdfIn PDF document text
    • http://kitazixozakabu.sportsontheweb.net/89623491737.pdfIn PDF document text
    • https://cdn.sqhk.co/lisakopew/YZGFMjb/xolomil.pdfIn PDF document text
    • https://cdn.sqhk.co/tazewupo/Sghifhe/resarejunexirek.pdfIn PDF document text
    • https://cdn.sqhk.co/pibigovaxavu/KMicggH/sia_helium_piano_sheet_music.pdfIn PDF document text
    • https://cdn.sqhk.co/peferitukofa/chhgdQZ/yellow_and_grey_world_map_canvas.pdfIn PDF document text
    • http://vibijinit.scienceontheweb.net/zevawu.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/Cnjdbf2/international_marketing_notes.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/hard_american_history_trivia_questions_and_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bitines.myartsonline.com/18969950615.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/fevesisilinu.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/87434593083.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzamada/2134955967.pdfIn PDF document text
    • http://nenunosulijud.rf.gd/91593544043.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/what_is_cub_scout_motto.pdfIn PDF document text
    • https://s3.amazonaws.com/xuvamuba/avidemux_2._5_64_bit.pdfIn PDF document text
    • http://puwagof.rf.gd/57234137248.pdfIn PDF document text
    • https://s3.amazonaws.com/tufitijinexu/vevogodof.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/what_is_shear_stress_and_shear_rate.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_off0000f8ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EA 5264 bytes
SHA-256: ecf91c939d6e63f700353affc1e232afeb711785693624c8ce5488f5e43836cb
font_01_sfnt_off00010b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B02 11472 bytes
SHA-256: acf478c0f6fdea00f34834f17570f0287e1d52569b9b9f0e1b6ec7da54ddf5b2

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