Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa857bcc419461ce…

MALICIOUS

PDF

88.0 KB Created: 2021-12-09 07:51:55 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 04a48d1addc9513e5d872d585dc4e362 SHA-1: 7b721f34f87eba8a8f7140bd9b55a954a3f18966 SHA-256: aa857bcc419461ce03ab8a5d1042a30c1b64b6f31dcb66275af6c11f2f99803c
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=9780198446941&kwd=Oxford%20Reading%20Tree%20TreeTops%20Fiction:%20Level%209:%20Captain%20Comet%20and%20the%20Purple%20Planet PDF link annotation
    • https://static.s123-cdn.com/uploads/4660103/normal_61b05fa85861b.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4660294/normal_61b01a32debef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4660241/normal_61b0d71f74826.pdfIn PDF document text
    • https://static.s123-cdn-static-a.com/uploads/4659983/normal_61b0a90c57847.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4659890/normal_61b032d0d10d8.pdfIn PDF document text
    • https://s3.ap-northeast-1.amazonaws.com/uploads.strikinglycdn.com/files/78e9c5f2-97a8-42f0-ae05-166f1996dfce/problems-of-chronology-in-gandharan-art-proceedings-of-the-first-international-workshop-of-the-gan-581.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off0000fd4e.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_off0000fd4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD4E 21864 bytes
SHA-256: b5fc52140a9205d934e610268763d97085740bae7979515ccfa205d35e6ea519
font_01_sfnt_off00013028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13028 20536 bytes
SHA-256: a7ad6ebf23af94500be1055ed9f59d9f6d1a7972e0e721b31936d989377c01c9

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