Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a704e9dbe0e8732…

MALICIOUS

PDF

70.2 KB Created: 2021-02-28 11:15:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bc610a3c269d4a67642bdfb1f4fe72c2 SHA-1: 8ceef420ad6a96f6aed850bd5d854c955b99d152 SHA-256: 0a704e9dbe0e8732ecbd5b6d3092aa6b48dc290f5f46015d38eab5f00b3cd54b
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/wix?keyword=clicker+hero+hacked+save In PDF document text
    • https://cdn-cms.f-static.net/uploads/4392220/normal_602300fa63f58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411481/normal_6016faa5285fe.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/marofedagesagirogolak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423772/normal_5ffc6b923b77d.pdfIn PDF document text
    • http://bokevefinobi.iblogger.org/the_amazing_spider_man_2_apk_obb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486346/normal_5fe17fe00e964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387420/normal_601abcca4d980.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415309/normal_601043ba89b4c.pdfIn PDF document text
    • http://kaxidabifibag.iblogger.org/rpg_maker_mv_tiles.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460076/normal_60066f4373a43.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479678/normal_5ff63116b9ad3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409796/normal_603805eba628c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385852/normal_60301bffd0abf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tafekeremo.epizy.com/tigoboxedipomoropom.pdfIn PDF document text
    • http://nanugubodiw.epizy.com/bufosujokakatufumumifan.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/50716615626.pdfIn PDF document text
    • http://tebaputazaxuva.myartsonline.com/23567078787.pdfIn PDF document text
    • http://lafebevu.rf.gd/kuxopaxolomezesewufitubep.pdfIn PDF document text
    • https://s3.amazonaws.com/ginutu/igualdade_e_equidade_de_genero.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/does_subway_nutrition_include_bread.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA69 4776 bytes
SHA-256: 30560e2c87c340f437f81bc903abcba97dc981ef9cafd6ed4da438f57fc33f6a
font_01_sfnt_off0000daa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA6 10316 bytes
SHA-256: aa2fce4e8a107c996f83ca0a6cfee9a219e2e6252cca700091ef42f933a2a106
font_02_sfnt_off0000fddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDDF 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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