Malicious PDF — malware analysis report

Static analysis result for SHA-256 12f3406805c973a7…

MALICIOUS

PDF

68.8 KB Created: 2021-02-11 23:37:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b281117553e5c717b6e8d9e087b34228 SHA-1: 5572566377c626c31aa191d3911e4773fafdaadd SHA-256: 12f3406805c973a79860f26901b5f309cbadeded57fbad413625b41c961aabe4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wix?keyword=investments+compared+worksheet+answers+chapter+8 PDF link annotation
    • http://de-bewertung-id2842384.icu/vixefvuum3.pdfIn PDF document text
    • https://cdn.sqhk.co/rodisukipi/hhpVXfO/lamazalodiw.pdfIn PDF document text
    • http://virnet77.ru/in_the_bleak_midwinterdayws.pdfIn PDF document text
    • http://trokot-online.xyz/38240763044qdv0k.pdfIn PDF document text
    • http://stnold.com/random_chat_no_loginau2xq.pdfIn PDF document text
    • https://cdn.sqhk.co/liwewajawab/ggifx96/quickbooks_online_accounting_invoicing_expenses.pdfIn PDF document text
    • https://zuberexuwaxif.weebly.com/uploads/1/3/4/5/134501439/lafiv-zukibenun-pemikoju-lidiragad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382780/normal_5fdf690ccc0e6.pdfIn PDF document text
    • http://santecmb-sarl.com/2206280904598r1o.pdfIn PDF document text
    • http://c-advance.space/aritmetik_dizi_sorular9j3iu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375889/normal_5ff46469c030d.pdfIn PDF document text
    • https://gaditefu.weebly.com/uploads/1/3/2/7/132712385/2653746.pdfIn PDF document text
    • https://cdn.sqhk.co/pijovowifil/B2ggieb/good_space_battle_movies.pdfIn PDF document text
    • http://pet-guru.shop/dufororajolaxenepus59id.pdfIn PDF document text
    • https://cdn.sqhk.co/derixosu/bNJjaQw/21735566176.pdfIn PDF document text
    • https://pufizemopuvagup.weebly.com/uploads/1/3/1/4/131407511/9281f85ff.pdfIn PDF document text
    • https://gejejemimegi.weebly.com/uploads/1/3/4/8/134899280/guzofepap-vavufisebo-zaxogofe.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/lusabifef/niwarixeviwuxorup.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/divekana.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_off0000cf5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF5A 5628 bytes
SHA-256: 9931aa6b1dae41200189ce2c6309aa2206a9604afb3c13f1ef27a2675fcc3c91
font_01_sfnt_off0000e269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE269 10208 bytes
SHA-256: 96793ab5a8e3fc87b9649835537d72596ea97bfee9bf40a6c308a53a1a0a0db5