Malicious PDF — malware analysis report

Static analysis result for SHA-256 54620a33c5daf593…

MALICIOUS

PDF

41.6 KB Created: 2021-04-27 12:28:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a315c986f74d8dbd3f4bfa30ff302705 SHA-1: 21cafc146fd1e51798090983e909a52ecd2650be SHA-256: 54620a33c5daf593835d7ca68384e0a613ae04deb0f4dfd97a5d1bb8c6960808
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-jailbreak-how-to-get-money-free-and-fast-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/wizard-life-roblox-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-goku-shirt-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-clothes-in-roblox-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/red-boy-how-to-get-free-robux.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-to-get-robux-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/executor-roblox-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/kazok-roblox-hack-script.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/my-wife-hacked-my-roblox-account-when-i-was-sick.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-gry.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/costume-free-roblox.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000422d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x422D 26424 bytes
SHA-256: 833839a052fbe1ee651a0d40385751c3c701a4313b6d8e2eef23883b58df35ac
font_01_sfnt_off00007da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA3 19452 bytes
SHA-256: be7ddf1bb7775cb0c3bab820b3b3d8c5fc066b3394017c4e0bfa7eeb6fd725a5

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