Malicious PDF — malware analysis report

Static analysis result for SHA-256 064f580a59bb7d73…

MALICIOUS

PDF

67.0 KB Created: 2021-02-15 18:50:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 89cbedd1deb7ce617a30247de14746b7 SHA-1: 4e4b883979aac02ef442a9f1bc21ee4629d69608 SHA-256: 064f580a59bb7d7391ebf760d983fa3035086fa6af2eb8e75492bf075f52db88
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://seumenha.ru/wix?keyword=ap+statistics+quiz+b+chapter+18+answer+key PDF link annotation
    • http://busurman.space/introduction_to_cost_accounting_questions_and_answerskzs68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385415/normal_6005c8f3935fe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425533/normal_5fe0c0e1e2465.pdfIn PDF document text
    • https://dumaxenuwumav.weebly.com/uploads/1/3/3/9/133997891/najamujorekivin_vedazujetup_norukujozurekev_zuboloka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465702/normal_5ff1f444058b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447464/normal_6019b10708469.pdfIn PDF document text
    • https://wexabegolorumad.weebly.com/uploads/1/3/4/3/134351445/e6b9ad99a22.pdfIn PDF document text
    • http://chelobaka.space/watch_my_hero_academia_heroes_rising_google_docsasmup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443624/normal_5fe340ad149ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425929/normal_5fe8646676679.pdfIn PDF document text
    • https://sitegevom.weebly.com/uploads/1/3/4/6/134664280/jadovesavakog_dikufaguvotuk_nuzudolumob_zuzuxemiri.pdfIn PDF document text
    • https://giweberemep.weebly.com/uploads/1/3/2/6/132682555/1c710e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wowifimeziv.rf.gd/zerenesinew.pdfIn PDF document text
    • http://silumigu.epizy.com/74937876192.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_off0000c74c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC74C 5800 bytes
SHA-256: a6ce97c6f5349283b5a48a95f1f3eaf25d16ba7a495da2deff17b551417ae981
font_01_sfnt_off0000db30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB30 10532 bytes
SHA-256: d2ba7db496d1b79d71fc0d70b78156771373f82059fd20861738fff982812c21