Malicious PDF — malware analysis report

Static analysis result for SHA-256 79540a0bf50923ce…

MALICIOUS

PDF

72.4 KB Created: 2021-03-03 17:02:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 87d28cb861513bcb8a2e2da0aeb4bb8d SHA-1: c6df93632b470ea5b9c42c8c2d2b60651bd01115 SHA-256: 79540a0bf50923ce3c97514738f22693f7d2ec56ba3c2851482e96f07b1b4660
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://golowaki.ru/wix?keyword=one+for+all+essence+tv+universal+remote+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4451375/normal_5feb9bbf704bb.pdfIn PDF document text
    • http://vclean-sale.shop/sekuxobubabamejukukuqvh.pdfIn PDF document text
    • http://metazoaapc.fun/what_questions_will_be_asked_in_a_teaching_assistant_interviewb7oa1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482617/normal_5fc93f217838c.pdfIn PDF document text
    • http://doweryklkq.space/mokawotumavunedefozuy0h02.pdfIn PDF document text
    • http://seamanygau.best/relgio_citizen_blue_angels_jy0050-55l_skyhawk_titaniumnoe6o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463287/normal_5ffa0df42a10b.pdfIn PDF document text
    • http://obuv-kozha.ru/wizard101_crown_generator_free_downloadkf17b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494866/normal_60142474af41d.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/vuforewebub/cfd_software_free_for_windows_8.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/sewebewo.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/luhri_hydro_project_latest_report.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_off0000e0a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A9 5116 bytes
SHA-256: f173e99e8920d011572ae02482a772060eefebb37ff74d5e7ef17d8ec49d6442
font_01_sfnt_off0000f204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF204 10120 bytes
SHA-256: 93bd6d7ab7a9d9efe4ac19337cfdd3e5aba5c1d4b83c7fe04c5c3c82472600a3