Malicious PDF — malware analysis report

Static analysis result for SHA-256 632d41d8f1d6ac33…

MALICIOUS

PDF

75.5 KB Created: 2021-02-22 03:14:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: a0eabc023aacb8a68a3400bb3edb744d SHA-1: d746e5849973746effd9506a3cc224338b34cf60 SHA-256: 632d41d8f1d6ac33560199b44003b2c20f78832810341ee55c7eab36de72008e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://druttle.ru/strik?utm_term=french+in+action+digital+audio+program+part+1 PDF link annotation
    • https://cdn.sqhk.co/mapetidul/aVVgjge/modotofog.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/5wsIEhh/19051335668.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/Hjbgcje/sogonasafixasokoro.pdfIn PDF document text
    • http://retys.fun/american_airlines_maintenance_manager_salaryi5bev.pdfIn PDF document text
    • http://teaitalis.space/battle_universe_360_videopavvk.pdfIn PDF document text
    • http://toppiksnack.xyz/secrets_of_the_federal_reserve_the_london_connection71b80.pdfIn PDF document text
    • http://stroiline74.ru/arcserve_udp_6._5_fullcvw5x.pdfIn PDF document text
    • https://cdn.sqhk.co/virapazetif/Bjjhd7y/vector_21b_manual.pdfIn PDF document text
    • http://lg-copyrightforms.com/6056056149nw9oq.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/gfgjAgd/best_weird_fighting_games.pdfIn PDF document text
    • http://13millions.store/mcgraw_hill_learnsmart_answers_anatomy_and_physiology3a9t6.pdfIn PDF document text
    • http://x-bionic.shop/razawetapizab8049v.pdfIn PDF document text
    • https://cdn.sqhk.co/sebidurubuze/Q27ibhe/11979903000.pdfIn PDF document text
    • https://cdn.sqhk.co/gerukoso/MAjchfn/fangamer_hollow_knight_book.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/bokofapig/jasperreports_subreport_not_showing.pdfIn PDF document text
    • https://s3.amazonaws.com/bulalowisu/zerisopowabebajeg.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/52127750948.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/cicada_sound_at_night.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_off0000e941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE941 5316 bytes
SHA-256: 7c7d813caf7ccfd496d5d0a13ffc965f3c7f9905dcd4b2292845ad9900ebeb20
font_01_sfnt_off0000fb34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB34 11532 bytes
SHA-256: 499470c897df7678a3f56a8781de2fc449fffbe2fb31a9f7044bef572a01a572