Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0062d817a6813de…

MALICIOUS

PDF

42.2 KB Created: 2021-04-27 11:46:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a7ead79bebe99da04861e67fe22ae94f SHA-1: 1f9209542c31f520e9fc606b68b7ce49e984008d SHA-256: a0062d817a6813de543d795b867e9dc9301f4bb4f823d911723460112c1fcb88
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. 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 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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-hack-club-2021-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/roblox-free-gamepass-exploit.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/https-www-blox-land-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-free-robux-robux-robux-scam.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-play-now-for-free-no-sign-up.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/5-roblox-games-that-give-free-items.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/cheats-for-murder-mystery-2-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-play-free-draw-alpha-2-on-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-pets-live-in-pet-simulator-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/building-simulator-cheat-codes-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-limited-time-may-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_003_off00004345.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4345 27748 bytes
SHA-256: 7f3009243c50e64b40a44c7a2ca3b888cd093cb5aff658a1a972b07f6d99f309
font_01_sfnt_off000081e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81E3 18724 bytes
SHA-256: 453a18f8865e5fffb25b38e6657aa27804e871a995fd89ada76bda576b1af32b

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