Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e4aae005b89656c…

MALICIOUS

PDF

73.4 KB Created: 2021-02-24 18:26:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bce75d88a1a0e9ae02b0f38ee00ede86 SHA-1: f8b3a10b0f2d22d8ccef5538647677617efacc32 SHA-256: 0e4aae005b89656c82f31b4c5f70d3712d3136ddab8d3676d44f24a96327db8e
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://seumenha.ru/123?utm_term=how+to+update+sims+3+patch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368742/normal_601be2df705ef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417314/normal_5ffb42e6519a3.pdfIn PDF document text
    • https://vilabusifa.weebly.com/uploads/1/3/0/7/130776169/809e9bb87669.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473388/normal_5ff0f6f613c3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425492/normal_5fd3775987d16.pdfIn PDF document text
    • https://vilofezilo.weebly.com/uploads/1/3/0/7/130740065/548326.pdfIn PDF document text
    • https://gefivogixofix.weebly.com/uploads/1/3/0/9/130969648/2e6e432fbb8e5.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/19632016635.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379362/normal_5ff080f67a57c.pdfIn PDF document text
    • https://sinonulu.weebly.com/uploads/1/3/4/6/134654736/guxidikotivo-romib-bodagekusulamed.pdfIn PDF document text
    • https://nofuxufemi.weebly.com/uploads/1/3/2/6/132681390/zatosipewomi_goluwix_futugafebu.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/ludevofuneme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482009/normal_6033f26b12106.pdfIn PDF document text
    • http://furofosozunonew.22web.org/cisco_packet_tracer_64_bit_bagas31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500665/normal_60219c2fd0b1b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dfba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBA 5400 bytes
SHA-256: ecfae4272c3910e89ae710401d8b19aa90316beabf886d6754174a6eea984d5d
font_01_sfnt_off0000f206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF206 11664 bytes
SHA-256: 864be600d848fd59158d9654cb76243ac74c769eaafe78f91143b37e8809286d