Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aff21aa87b489a1…

MALICIOUS

PDF

72.6 KB Created: 2021-02-16 19:13:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f0cc86ffa28f06d2fd4f389b82f4b21d SHA-1: bffa91f2f46467b8e3412b29a4f16ea9cb2ccf31 SHA-256: 9aff21aa87b489a11a58cc024da81f00bbe5a99eb8f792712aa38c28e03c7aee
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=slither.io+apk+download+hack PDF link annotation
    • http://bodatajusabobof.22web.org/47279218073.pdfIn PDF document text
    • https://cdn.sqhk.co/refimadaraze/gdjh6RX/zevagajugazoxubejasi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385862/normal_602b8ace201af.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/f9idgc9/merchant_bank_legal_definition.pdfIn PDF document text
    • https://rigawolazi.weebly.com/uploads/1/3/4/7/134710531/4086647.pdfIn PDF document text
    • https://ruxelasukosife.weebly.com/uploads/1/3/4/6/134667582/dojapawisir.pdfIn PDF document text
    • http://nevogixire.22web.org/josomakojajuzadu.pdfIn PDF document text
    • http://gupupokuvugal.22web.org/arrival_of_the_birds_violin_sheet.pdfIn PDF document text
    • https://popupobapovuzus.weebly.com/uploads/1/3/4/0/134012290/a0a78.pdfIn PDF document text
    • https://famogapev.weebly.com/uploads/1/3/1/6/131606489/jifuj-vegov.pdfIn PDF document text
    • https://furuvisagibeveb.weebly.com/uploads/1/3/1/4/131453033/gajojuvivuka.pdfIn PDF document text
    • https://zonulezewuras.weebly.com/uploads/1/3/4/8/134890742/5152563.pdfIn PDF document text
    • https://serewutedirafam.weebly.com/uploads/1/3/5/3/135339767/moduz.pdfIn PDF document text
    • https://mimitokiwunas.weebly.com/uploads/1/3/4/0/134012498/lekuzimulawol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dasudigakufise.rf.gd/98485597441.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_off0000e109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE109 5276 bytes
SHA-256: cbc35deb7d39de6a7576dbf4b3b0b517b433205be015b9e15ea7dc2323c152a1
font_01_sfnt_off0000f2ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2FF 10144 bytes
SHA-256: 96e33477cb4aed599058f917ea50c8efe42889afe1bfb7d4c3b9b6e2241af433

Open this report in the interactive analyzer, or submit your own file for analysis.