Malicious PDF — malware analysis report

Static analysis result for SHA-256 137fb10b9078d698…

MALICIOUS

PDF

66.6 KB Created: 2021-02-18 05:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7dfe1e4a788d24e22ad92e8be68750e3 SHA-1: cdaade0c274d242ee181f06c2ce2476380c4362f SHA-256: 137fb10b9078d6981e8dca78eecbd90ea014263a7728449e7f131de60c71e0fb
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=magic+bullet+deluxe+upgrade+kit PDF link annotation
    • https://rafutukeri.weebly.com/uploads/1/3/1/4/131453201/2685675.pdfIn PDF document text
    • https://rebejudan.weebly.com/uploads/1/3/5/3/135316845/6343048.pdfIn PDF document text
    • https://vigekajabaka.weebly.com/uploads/1/3/4/7/134708837/8f5499e2ac48d30.pdfIn PDF document text
    • http://merutakozuxonu.22web.org/tinkerbell_coloring_pages.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490129/normal_6001cefbbb48c.pdfIn PDF document text
    • http://mosaniz.22web.org/84981871600.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371265/normal_600b58e173c8d.pdfIn PDF document text
    • https://kasasifu.weebly.com/uploads/1/3/4/6/134697732/dozig.pdfIn PDF document text
    • http://puwofipafemuvif.22web.org/lizanubema.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/gajakelegeza/afiliacion_al_banco_bicentenario_nueva_plataforma.pdfIn PDF document text
    • http://fisuzes.epizy.com/zudabepefulebegegod.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/xurasifixubirowu.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_off0000c818.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC818 5340 bytes
SHA-256: 77d22efd68f9ab922a9f4852e30d97f9a6d4780b29d094ea3a6c6241c53ffbf5
font_01_sfnt_off0000da5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA5D 10188 bytes
SHA-256: e0ff9b2f406966418d6eb993525357fc4f3cf37dae6d308cebc4d9a21eb82972