Malicious PDF — malware analysis report

Static analysis result for SHA-256 74463aaff411af4c…

MALICIOUS

PDF

70.2 KB Created: 2021-02-19 02:15:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 130b8b96dd0b28a854a3c20494dac674 SHA-1: c4b8707b53fa70bfaead9e1241946b255f859c8f SHA-256: 74463aaff411af4c51f2ceda4ff236af80d697c6eed29a2e5fd62bc9757456ed
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/wix?keyword=world+basketball+challenge+unblocked+66 PDF link annotation
    • https://cdn.sqhk.co/tatudawo/gfhcdhc/hatsune_miku_offline_music_like_magic.pdfIn PDF document text
    • https://nakaporona.weebly.com/uploads/1/3/1/4/131438848/5427340.pdfIn PDF document text
    • https://wigojakumadofef.weebly.com/uploads/1/3/1/6/131606024/vubunakoba_jazizas_direkinepaxupo_bekutebopovalis.pdfIn PDF document text
    • http://vapideloni.22web.org/17005744079.pdfIn PDF document text
    • https://lubozukutiximik.weebly.com/uploads/1/3/4/4/134472848/nogovurode-wefasawi-sixufolufe-pekesos.pdfIn PDF document text
    • https://lezevonunibo.weebly.com/uploads/1/3/4/5/134577944/7af41f037d.pdfIn PDF document text
    • https://cdn.sqhk.co/wanolugago/fBAghgY/ant_killer_walmart_canada.pdfIn PDF document text
    • https://cdn.sqhk.co/fexonawizoz/hcibxhf/hornblower_san_diego_dinner_cruise_coupon.pdfIn PDF document text
    • https://cdn.sqhk.co/gulanuwe/fejxGsl/lidonugipovojikevis.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/LgdhewX/gravity_jump_data.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xokopaxitake.rf.gd/windows_activation_diagnostic_report.pdfIn PDF document text
    • http://femolejo.epizy.com/jerisava.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_off0000d379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD379 5572 bytes
SHA-256: 153c51a03643e990cf1edaaea87becf10b11bea76ee9703eeaf2a5e764dde527
font_01_sfnt_off0000e66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66E 11448 bytes
SHA-256: 81b1c679795273524128ec83660d95459b957bd1727e3565c29acb5d7d8d8e6d