Malicious PDF — malware analysis report

Static analysis result for SHA-256 552037a39941fa23…

MALICIOUS

PDF

92.0 KB Created: 2021-12-07 20:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-19
MD5: fc74fd58247b89d2b8c3bc670ad049d4 SHA-1: 972316dee4beebfae1c351266972d0bfd8a06e56 SHA-256: 552037a39941fa2370c081469922ba2c0618d690d8ee8acdc6cc6ef45f339ec2
94 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0333

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • 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=9781932394795&kwd=iText%20in%20Action%20:%20Creating%20and%20Manipulating%20PDF PDF link annotation
    • https://s3.ap-northeast-1.amazonaws.com/uploads.strikinglycdn.com/files/190ef9d4-0039-4bda-b20a-e53f200b6c1f/joy-of-improv-book-2-completing-the-foundation-811.pdfIn PDF document text
    • https://static.s123-cdn-static-c.com/uploads/4659812/normal_61ad40303cb27.pdfIn PDF document text
    • https://static.s123-cdn.com/uploads/4659732/normal_61ad696b20e20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4659647/normal_61ad8b4b2e362.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4659661/normal_61ad8cdba48ee.pdfIn PDF document text
    • https://files8.webydo.com/9588913/UploadedFiles/A1AAF004-C480-E254-FFB3-A978DC8E59E0.pdfIn PDF document text
    • https://s3.ap-northeast-1.amazonaws.com/uploads.strikinglycdn.com/files/190ef9d4-0039-4bda-b20a-e53f200b6c1f/joy-of-improv-book-2-In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off00010d00.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_off00010d00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D00 21828 bytes
SHA-256: 16106dc37105bd4ea50d06d592ec1ca692ad7a90f08311dcd7a54f2e9e623b6b
font_01_sfnt_off00013ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FF0 20584 bytes
SHA-256: 2f2aa02ac4ce902a4b0ff06a02eaea66a08c99e5db9c93e659005c7d6de2c75a

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