Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bdd5766041291af…

MALICIOUS

PDF

78.0 KB Created: 2021-02-26 04:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d230f7a48665544e6d8cf96e868f1a8d SHA-1: ff8348d25063934c527d1dbc15459232da1ac4c2 SHA-256: 6bdd5766041291af65406816e9f859a08c48de2a84f99a0c280d9462db4a5825
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/award?keyword=biblia+de+jerusalen+app PDF link annotation
    • http://rukozhop-guide.com/swann_enforcer_8_channel_1080p_reviewgbrdx.pdfIn PDF document text
    • https://xunopigiwigon.weebly.com/uploads/1/3/1/6/131636761/838713.pdfIn PDF document text
    • https://cdn.sqhk.co/xipovowimugo/hfhvBzC/wigidatopige.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/jfBiddl/xebanosuzegi.pdfIn PDF document text
    • http://tokigarodam.22web.org/pennymac_investor_guidelines.pdfIn PDF document text
    • https://cdn.sqhk.co/satijumok/IiirTha/online_co_op_story_mode_games_ps4.pdfIn PDF document text
    • http://detonicufficiale.website/minnie_driver_fakessejpo.pdfIn PDF document text
    • https://xefanopebowemid.weebly.com/uploads/1/3/2/6/132681782/69ec047209.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/aojhCgg/labofisepunesasiw.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/jgejh3I/texowitofiletemufiw.pdfIn PDF document text
    • https://gagopono.weebly.com/uploads/1/3/2/6/132681316/dazemawexa.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/zonivezada/pariwe.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/alpha_helix_beta_sheets_difference.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/72209661873.pdfIn PDF document text
    • http://jefevuxivux.epizy.com/bufulisizokasomumula.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_off0000f12d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12D 5220 bytes
SHA-256: 5e3a8bca4a6f0628db82987a4a55cb3697c6929e9314c547e9586f9b7127c6c3
font_01_sfnt_off000102f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F8 12348 bytes
SHA-256: f106852f4efe6902a12fc8008fe489e490680914300fba45cc9f2adc41ee89b6