PDF static analysis report

Static analysis result for SHA-256 e8c521a751b3a56e…

SUSPICIOUS

PDF

41.8 KB Created: 2021-05-15 06:44:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3b71cfd5fb37ea06db6911dd7507baab SHA-1: d2e2b2a649505bf743cb3e2d8eff545db0315e29 SHA-256: e8c521a751b3a56ea9d761df3ddadd12dc88412aca90871d80bd645faf18b1cd
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as suspicious. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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://netcdn.xyz/app/431946152/my-roblox-account-was-hacked-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000035f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35F2 26192 bytes
SHA-256: 41b30b10d92de1384900722a2a30e8a85b1a0aea609c9c4d301169b7be241585
font_01_sfnt_off0000729c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x729C 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00007f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 19176 bytes
SHA-256: ffd13423bb2d32432d99d8a895d46ab03e3902ef9e73634024ba4176c0f3d041