Malicious PDF — malware analysis report

Static analysis result for SHA-256 99d5523fed378b54…

MALICIOUS

PDF

68.2 KB Created: 2021-03-03 15:01:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2d3720a520c0a9ec0994dac98a374afe SHA-1: 30aaa10b6954f7838d6406d340a3b0b23ea3fd24 SHA-256: 99d5523fed378b542c499b71bea06e552b1dd28a5eed6065eac5e53415bda13d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://mezovuduw.ru/award?keyword=philips+norelco+multigroom+5000+specs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424011/normal_6011b2bea7373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417040/normal_600d9886b78e4.pdfIn PDF document text
    • http://kimokabif.medianewsonline.com/xevilevel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485004/normal_5ffc01891b4a1.pdfIn PDF document text
    • https://cdn.sqhk.co/kelifevaz/hyRgfic/97889505608.pdfIn PDF document text
    • https://wifevotus.weebly.com/uploads/1/3/4/8/134897576/pumapi.pdfIn PDF document text
    • https://jojapewabivato.weebly.com/uploads/1/3/1/3/131379205/4757633.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/64459029619.pdfIn PDF document text
    • http://fajazimigig.atwebpages.com/romeo_and_juliet_1996_soundtrack_when_doves_cry.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_off0000cca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA4 5404 bytes
SHA-256: f0ecd6c5c9c05e58cbdcee382e8de73cd646d01d1c412881a0863796386c9d95
font_01_sfnt_off0000deea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEEA 10580 bytes
SHA-256: 1c3872b584f235ed7d1bc0338623130a7952b94ed665c9f2ff272dee262ffeb7