Malicious PDF — malware analysis report

Static analysis result for SHA-256 91a2b197a152d32e…

MALICIOUS

PDF

99.3 KB Created: 2026-05-25 10:37:27 +02:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-05-28
MD5: 9c31c4fb479c65166de7be3682e8c54d SHA-1: 35f406d7ff46e03b56e44b3b45a3886d48ec4487 SHA-256: 91a2b197a152d32e9a163e71e35ce1a633ab9238485428a56883289a84a7e71b
122 Risk Score

Machine Learning

  • Nyx PDF Classifier clean score 0.0010

Heuristics 5

  • Image-only PDF lure links through URL shortener high PDF_IMAGE_LURE_SHORTENER_LINK
    PDF is image-heavy with little real text and its clickable action points to a URL shortener. This is a high-confidence credential-phishing carrier shape: the visible page is a screenshot-like prompt while the destination is hidden behind redirect infrastructure.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 2 image(s), only 0 text block(s), carries a click-outward action, and is only 99 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://tinyurl.com/22dcz9cf In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off00012f8c.bin)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_000_off000001ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1CA 315074 bytes
SHA-256: 247ce851d008abb71a4d42b4099f25ac8eb1c9d97e79bf6fdcf8425045de2281
font_00_sfnt_off00012f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F8C 15676 bytes
SHA-256: d2adfe2ca01cf04608da520dbd71cfe79a7ab0516edf53c0edbe3569d74c05e3
font_01_sfnt_off00014b90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B90 14256 bytes
SHA-256: 61462ae18132282bf4da89c171a5cb86b7d52611d05ca124d6d0d494b0aab197
font_02_sfnt_off000162e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162E6 16624 bytes
SHA-256: 51b0b5df35d49595481ff7b84d4d46a6e553bc251210d0c2a393cb99a84df666
font_03_sfnt_off000183fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x183FE 792 bytes
SHA-256: 56b712e630cfed1b9f4013a6458874cf9350000ffc6e12991770e1f4febddd11