Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1fb10ee693fff4c…

MALICIOUS

PDF

81.5 KB Created: 2021-02-27 00:58:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 28ce1b0451874ee754264473a314e847 SHA-1: bf16ed8ad831177a2a044191ec3661d224accb37 SHA-256: e1fb10ee693fff4c2f0fa0e3eeb2f6f7a68717a810e67cc0511aa7d49113b37b
96 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with one specifically pointing to a domain that appears to be a phishing lure disguised as a car seat manual. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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://maypoin.ru/123?utm_term=safety+first+alpha+omega+car+seat+manual PDF link annotation
    • https://cdn.sqhk.co/vadetegubufo/Jgighgd/board_game_online_store_europe.pdfIn PDF document text
    • https://cdn.sqhk.co/rokajoten/NhdygeB/huey_helicopter_for_sale_cheap.pdfIn PDF document text
    • https://cdn.sqhk.co/rovukupovumo/GthgjhV/kaxuwuxufidu.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/rjjdjpe/can_t_move_data_to_sd_card_android.pdfIn PDF document text
    • https://cdn.sqhk.co/kigaratak/ji6COT9/52251812546.pdfIn PDF document text
    • http://minesaxofunawi.getenjoyment.net/vuzusixovogevomanepusa.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/hv9jcIY/49405926558.pdfIn PDF document text
    • https://cdn.sqhk.co/koletexun/jegi6R6/75918885039.pdfIn PDF document text
    • https://cdn.sqhk.co/mivuxakadu/igjVX3K/dalibosus.pdfIn PDF document text
    • https://cdn.sqhk.co/piwuzuberaze/ibawhav/zebawebeganen.pdfIn PDF document text
    • https://cdn.sqhk.co/gogerazina/jjUKgjt/download_death_worm_tm_free_mod_apk.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/jilekirasivejodawugusezo.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/jihj2kU/wubajetigebuz.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/gusule/tasmanian_coroner_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/ff6_lethe_river_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mosezavor/both_either_neither_worksheet.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_off000101f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F2 5632 bytes
SHA-256: 5c9e421464b20b87f003b43d08f2a78b33760659da7fbd96363430e3b323c0ed
font_01_sfnt_off00011503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11503 10368 bytes
SHA-256: 17627be6f2786eff96d42ed5cf9fa96cb5c46596a0f7b12739ad43e3a219f780

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