Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b7911d565ca0f7…

MALICIOUS

PDF

89.1 KB Created: 2021-12-10 13:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-27
MD5: 66f21b0039d6aab4b2ca089234ea7a34 SHA-1: 0fad01e581952d31c994c7d49ebcaaf977792aec SHA-256: 88b7911d565ca0f75814447ce0edeb37a7bf33408ccafcbcfefb37236efad08a
67 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0323

Heuristics 5

  • PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
    PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
  • PDF links to disposable redirector campaign host medium PDF_DISPOSABLE_REDIRECTOR_CAMPAIGN
    PDF's outbound link points to a throwaway redirector domain that recurs as the sole redirect across a large family of otherwise unrelated spam PDFs (movie-piracy, affiliate, and viral-link lures). These domains appear on no reputable list and exist only to funnel openers into malvertising / scam / download chains.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://getpdf.pw/book?res=weby&isbn=9781506700021&kwd=Nexus%20Omnibus%20Volume%207 PDF link annotation
    • https://static.s123-cdn.com/uploads/4663421/normal_61b201e440bd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4660136/normal_61b1b0578cd8f.pdfIn PDF document text
    • https://static.s123-cdn-static-a.com/uploads/4659968/normal_61b1874be0d23.pdfIn PDF document text
    • https://files8.webydo.com/9589305/UploadedFiles/31290F8D-F606-CE4E-09D0-0005D3FE3339.pdfIn PDF document text
    • https://static.s123-cdn-static-a.com/uploads/4663782/normal_61b22e5e2bd08.pdfIn PDF document text
    • https://img1.wsimg.com/blobby/go/56e40918-497d-4227-9700-332041449846/the-body-adorned-sacred-and-profane-in-indian-.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off00010296.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10296 21860 bytes
SHA-256: 1708299ad80b27b410917ebb98ee106efe8dcf8bdbb2a0c98c48dfdc49905293
font_01_sfnt_off000135b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135B7 20076 bytes
SHA-256: 610fce938d51931a684cee3d176effce55ff143e015f2b5fd091f1f89ba59ff0

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