Malicious PDF — malware analysis report

Static analysis result for SHA-256 f604fa6d1b89b50d…

MALICIOUS

PDF

70.2 KB Created: 2021-02-27 11:23:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d3387bb57222e655dd3e53fe503c6b6e SHA-1: 5b76c1a5cea8a3d9e21fdf13f02d924431ce05a9 SHA-256: f604fa6d1b89b50d8677eaff22cc6af5773814a6f6711d4aece5909f8c50fb59
134 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 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=bulk+order+beer+mugs PDF link annotation
    • https://satizivuzaked.weebly.com/uploads/1/3/4/3/134383512/3443458.pdfIn PDF document text
    • https://vunidiripoga.weebly.com/uploads/1/3/1/4/131453449/kugijezozomo.pdfIn PDF document text
    • http://zabemaladameg.medianewsonline.com/what_is_feminist_literature.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/cUqijzF/formula_accidente_de_trabajo.pdfIn PDF document text
    • https://vafobuzegigotot.weebly.com/uploads/1/3/0/7/130775214/fojajedemime-xejuxab-vadir-wuvuwe.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/qu_significa_dominio_en_matemticas.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/burger_king_menu_specials_2021_south_africa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422382/normal_5ff662a9b6b2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379485/normal_600d64ec5d534.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/15075072329.pdfIn PDF document text
    • https://xigujevaw.weebly.com/uploads/1/3/4/7/134701692/zesonaburexuv.pdfIn PDF document text
    • http://labifovejes.mypressonline.com/42909004760.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/sajezife/ansys_workbench_17._0.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/46073402799.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/lutakiwulan.pdfIn PDF document text
    • http://fuvarijes.atwebpages.com/91653371340.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/siwedokusebixit.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_off0000d723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD723 5188 bytes
SHA-256: 674b9435b3d627a5b511a2af514f4879aab8a41a8910a2c148e1240d31c08924
font_01_sfnt_off0000e8b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8B4 10564 bytes
SHA-256: 80679fb6eb6533a48c3510a422cc2487cd9a0ac0c94edbd6af3590423eb554e1