Malicious PDF — malware analysis report

Static analysis result for SHA-256 4191509d8e3548fe…

MALICIOUS

PDF

64.2 KB Created: 2021-02-26 09:08:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: afa997b89acf36517cbc589a0077f9d3 SHA-1: f6589053c66dcab24fa5232d256d122c77e7bfd0 SHA-256: 4191509d8e3548fef037cfbb14e0b5e56ae63520ca5652a2e5e3135fe85e6c93
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://bologen.ru/wix?keyword=fad+diet+worksheet PDF link annotation
    • https://sorimuzumetig.weebly.com/uploads/1/3/4/5/134519591/8397643.pdfIn PDF document text
    • https://fuwupizur.weebly.com/uploads/1/3/5/3/135390256/c815ba823e89c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409393/normal_602f85a0d0dd9.pdfIn PDF document text
    • https://bumewotosebixab.weebly.com/uploads/1/3/5/2/135298585/jitox_vorokifolu.pdfIn PDF document text
    • http://feedbacrnz.space/51858912264i4i99.pdfIn PDF document text
    • http://detonic-ufficiale.website/living_clean_na_book_quotesttabz.pdfIn PDF document text
    • http://stikc.xyz/possessive_pronoun_worksheet_for_grade_5y7aja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443814/normal_602d033b86411.pdfIn PDF document text
    • https://nusoselif.weebly.com/uploads/1/3/4/4/134470887/tijetuzupete.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467278/normal_601fd996bc460.pdfIn PDF document text
    • https://gakewejodum.weebly.com/uploads/1/3/4/9/134902465/7673414.pdfIn PDF document text
    • https://ralifanexipoker.weebly.com/uploads/1/3/1/3/131380500/zifavefov.pdfIn PDF document text
    • https://siwepuxerit.weebly.com/uploads/1/3/0/7/130775843/6749906.pdfIn PDF document text
    • https://vavunoruluso.weebly.com/uploads/1/3/1/0/131070491/2730028.pdfIn PDF document text
    • https://vaxudiku.weebly.com/uploads/1/3/4/7/134709892/476507.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/pesetufavo/madinodakibuvonad.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/beyblade_metal_fusion_games.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/26715666285.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_off0000c156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC156 4992 bytes
SHA-256: 154662776d289cd3f9aed54cfaa8490939d9f694f0d88e9b9be85713b4d228f3
font_01_sfnt_off0000d261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD261 9948 bytes
SHA-256: a389f5cdbf414bfbe54db5bbc715c40161cdfcbf8ae3cec3d0cd6c24a1b1514e