Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd55c1ed9b3e7fbd…

MALICIOUS

PDF

73.1 KB Created: 2021-02-12 21:26:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 473f6a0ddc475d4168394bcbb4904890 SHA-1: 9bcbe2038c750eb027fc27a4f6168a5b3a6054cf SHA-256: bd55c1ed9b3e7fbd223bfe1bacc9eabf56e1d2970498a34b5ac71f2e5bfb3ddc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=hydro+flame+rv+furnace+troubleshooting+website PDF link annotation
    • http://doctora.club/male_mortal_kombat_10_charactersyg9h0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489969/normal_5fe6b4218e123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468827/normal_5fe80ec1a0f3c.pdfIn PDF document text
    • http://yognat.space/14053626021f3z3n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416139/normal_6019d76f9b32d.pdfIn PDF document text
    • http://simkosa.website/willard_spackman_terapia_ocupacional_12_edicionwoyoa.pdfIn PDF document text
    • http://importants.space/autocad_basics_bookbpwfu.pdfIn PDF document text
    • http://maska-respirator.com/tupoboselewolrqfk2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499021/normal_5fd3be76a07ed.pdfIn PDF document text
    • http://igrarazuma.info/rucoy_online_hack_androidqhn9a.pdfIn PDF document text
    • http://nuverlites.online/23621240133kbge5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416789/normal_5ff1ea6cb9103.pdfIn PDF document text
    • http://cupe1.ru/dexudijitoxa0bmvu.pdfIn PDF document text
    • http://50offshop.pro/facebook_android_desktop_ansicht038ky.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gubowejuxenixu.rf.gd/cg_jas_geet_audio_song.pdfIn PDF document text
    • http://posijibanif.epizy.com/81241109010.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_off0000e126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE126 5792 bytes
SHA-256: 8b5942c634cfa9f0d82e13b54850624f61a93d3821896754003a6d08e3b03583
font_01_sfnt_off0000f4cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CF 10036 bytes
SHA-256: 36b7b10389db1f4b8c0cf89eeac587efb6585509720357803291b86be6e89edb