Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a35d941cb6e637…

MALICIOUS

PDF

42.2 KB Created: 2021-04-28 21:40:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cf9816414dc7db0e7e66be2f29d43aa8 SHA-1: 2b0b3432dc78c13b6f43e4c5f4c31c690005d6a2 SHA-256: f9a35d941cb6e63758d3dd21d81310a710f612140940082055006291779ed18c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 malicious score 0.9941

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/roblox-dragon-ball-infinity-saga-hack-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/get-100-free-robux-daily.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/new-cheat-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/install-roblox-free-online.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/sean-cheat-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-speed-hack-2021-may.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-games-that-give-you-free-robux-no-password.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/daniel-hack-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-ropa.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-how-to-get-free-in-game-items.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-make-free-robux-games.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off000042c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42C5 26924 bytes
SHA-256: 1c73dd463df1d7e02032608983359c2a6fc434601ecba6ea2a17eed86c036c09
font_01_sfnt_off000080f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80F0 19040 bytes
SHA-256: 8b6ce86cb8e356e130721995d287d865cc598d90190394be20d8a68d379ac0bb

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