Malicious PDF — malware analysis report

Static analysis result for SHA-256 552af655ba137dbc…

MALICIOUS

PDF

91.6 KB Created: 2021-12-07 22:21:37 +03:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-19
MD5: e50bf20e6f81d18ff679899beea1216b SHA-1: 7a69d7bb1fb43dd966b732a3faf2a7272024c77f SHA-256: 552af655ba137dbccb3eb68580fa006b52cfcfc51111293611ea868873b5bb4e
82 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0241

Heuristics 5

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • 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
  • 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://static.s123-cdn-static-c.com/uploads/4659552/normal_61ad5ab2a0a90.pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4659630/normal_61adb5a910a5a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4659235/normal_61ad71a4e70c8.pdfIn PDF document text
    • https://s3.ap-northeast-1.amazonaws.com/uploads.strikinglycdn.com/files/7d4eaf20-adee-4415-8d8c-e14f3836d073/the-story-of-space-661.pdfIn PDF document text
    • http://getpdf.pw/book?res=weby&isbn=9781587204487&kwd=CCNA%20Security%20PDF link annotation
    • https://static.s123-cdn-static-a.com/uploads/4659796/normal_61ad6c454bf52.pdfIn PDF document text
    • http://getpdf.pw/book?res=weby&isbn=9781587204487&kwd=CCNA%20Security%20(640-554In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off00010d8b.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_off00010d8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D8B 21940 bytes
SHA-256: 48f7b1af6a7f0941133eb653fd3c1ec2c2fcb5b1874e46f6462b6349df3175fc
font_01_sfnt_off000140d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140D2 19388 bytes
SHA-256: cd4ad43adf0459a53dba21917279e5818a678729754d0a4ae40d238987caf489

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