Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c645bc5949d19e6…

MALICIOUS

PDF

63.3 KB Created: 2021-02-25 12:23:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 44fc8f855668e629e58869d5b1cb97bd SHA-1: ade74c15f8fc136c59031e2e7a552b5bc47f442a SHA-256: 2c645bc5949d19e6bef466d42e1d6fa45eafc3c30dd2af31f3c0456189e3ebb0
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=fulton+manual+trailer+winches In PDF document text
    • http://varietystore.website/how_to_hook_up_my_directv_to_wifi2g3o1.pdfIn PDF document text
    • http://mavpa.fun/cardiopatia_hipertensiva_pulmonar7sw7k.pdfIn PDF document text
    • http://smartcreditus.info/lugemo153v.pdfIn PDF document text
    • http://dithetsen.xyz/flight_logbook_coverc4ajd.pdfIn PDF document text
    • http://unlockdeals.shop/nba2k17_free_downloadhjmy6.pdfIn PDF document text
    • http://hh666o.site/fibilexikamemunkwz6g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476273/normal_602df447416a0.pdfIn PDF document text
    • http://ketokod.iblogger.org/36895721326.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gupupofof.rf.gd/mathematical_tables_log_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/dasovijegote.pdfIn PDF document text
    • http://lunowakaneruf.rf.gd/12276925496.pdfIn PDF document text
    • http://wepezip.epizy.com/caladium_bulbs_planting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/99835415134.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/64586633784.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_off0000bd18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD18 5088 bytes
SHA-256: 3060f6aa8122de471cf203098e90daba8086caf7b5b3ee6b0ca117b10f547212
font_01_sfnt_off0000ce44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE44 10048 bytes
SHA-256: 8667edc4573b7a8a50c9d51c4671ca292113526d9066ea5593bec9c8777a4174