Malicious PDF — malware analysis report

Static analysis result for SHA-256 be6bdbde4007add6…

MALICIOUS

PDF

43.8 KB Created: 2021-04-30 04:32:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: a3f6470ccaa93556abdc7fd343d80a7d SHA-1: f71b6a8914727b99e1b3b0565c5bd793e91265b2 SHA-256: be6bdbde4007add68448c6a60d5ce846ff3bc54461b73d8d9685c61a45f12a76
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 0.9936

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/hack-on-roblox-free-money-vircle-simulator-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/free-red-shirt-in-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-aresonal-serer-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-750k.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-knife-cbro-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-elemental-wars-hack-script.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-headphone-roblox-for-your-avatar.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-generator-no-human-verification-no-survey-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-roblox-accounts-on-computer.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-frog-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-codes-murder-mystery-2.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_off0000438d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x438D 29212 bytes
SHA-256: 38e5f23a6f11e33468600e74b7b795417e3964bb17c06dbacd55471968033102
font_01_sfnt_off0000863f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x863F 19480 bytes
SHA-256: 978d8f63f5825af22bc309ce9aeaf3e02ebe644f1095a874d1243c8923aadb0e

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