Malicious PDF — malware analysis report

Static analysis result for SHA-256 e759a17e31f9cf35…

MALICIOUS

PDF

67.5 KB Created: 2021-01-12 03:39:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9e2c28fa5eb004a98a09a0ebacd452df SHA-1: 631bee0abaa3827432217c477995d538fc453986 SHA-256: e759a17e31f9cf3556382d11aadf281fb0628c63bb17dcab20f04e2d4d5a8e0b
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain, traffset.ru. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, references 'Pleasanton school district ks', suggesting a targeted lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?utm_term=pleasanton+school+district+ks PDF link annotation
    • https://cdn.sqhk.co/riketumes/K5CAieh/ordained_minister_license_texas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460975/normal_5fc21ca8aa996.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481675/normal_5fd6ac589febf.pdfIn PDF document text
    • https://cdn.sqhk.co/feduvefas/mfOidhh/78420382214.pdfIn PDF document text
    • https://cdn.sqhk.co/karapazepot/P7hadDa/i_am_innocent_app_ending.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/hcbgj2c/word_link_game_download_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/jaguwubax/iAHiigd/63517608662.pdfIn PDF document text
    • https://cdn.sqhk.co/podidiwi/BAhjQWF/the_world_ends_with_you_switch_walkthrough.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/lupuvogotog/christmas_canon_piano_sheet_music_printable_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/neuropsychological_assessment_battery_software.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/60662545267.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/74319845256.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/80435977176.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_off0000c895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC895 5092 bytes
SHA-256: 4d988c80f2b4db2232e0baafab6db89ae7f432ec2a6550646137bdd2457249f7
font_01_sfnt_off0000d9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D7 11028 bytes
SHA-256: b473a4cc3c8dbbc376a08bd3f2f10250fcfdc9a70dc56c73805bf3a330273edc