Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ebf337296b1b90…

MALICIOUS

PDF

73.9 KB Created: 2021-02-21 14:39:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ef47d01c9f9c25e048794f6d17b44eaa SHA-1: d2be24d4473c01d9618f0b2764c152c3347654f0 SHA-256: 03ebf337296b1b90b6b09c81367d706edfec15acdd87c966249291742ccb723d
186 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/aws?utm_term=how+do+i+identify+a+sugar+maple+tree+in+winter PDF link annotation
    • https://geguxoko.weebly.com/uploads/1/3/4/5/134594570/2499306.pdfIn PDF document text
    • http://gopururin.iblogger.org/zawivatuvulasijemurufija.pdfIn PDF document text
    • https://cdn.sqhk.co/jekenilegefe/xicigii/67601397866.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/Kgdkgea/puvupasodev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409114/normal_5feea20d22f83.pdfIn PDF document text
    • https://nutipofuvi.weebly.com/uploads/1/3/5/3/135310868/6685623.pdfIn PDF document text
    • https://cdn.sqhk.co/domuduxuro/pgjSBgT/79953313040.pdfIn PDF document text
    • https://venolebibu.weebly.com/uploads/1/3/5/3/135348563/bb30e03ef0306f4.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/jgFkiae/sorulirigifi.pdfIn PDF document text
    • https://gogesatita.weebly.com/uploads/1/3/4/3/134321397/88ddf6771f.pdfIn PDF document text
    • https://tobalewaluwe.weebly.com/uploads/1/3/4/4/134437424/e271f.pdfIn PDF document text
    • https://bafalado.weebly.com/uploads/1/3/4/8/134865771/kefigufu-didadupab-puvamekaverot.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/vavejijitatofu/zewanorekojuvalewakuw.pdfIn PDF document text
    • http://bixoravu.epizy.com/jenetovagoke.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/80541005162.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_off0000e2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BF 5516 bytes
SHA-256: e96df3641b135e7cbbafc669e1f0393213aa03e6ee809f46dde62f67243bcb13
font_01_sfnt_off0000f587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF587 10868 bytes
SHA-256: 51a2f21a73e8e056401962fb03092953a5ad95c078d3a2ea7cd73c12d670c4ca