Malicious PDF — malware analysis report

Static analysis result for SHA-256 db04f83351f012e4…

MALICIOUS

PDF

36.5 KB Created: 2021-06-25 11:26:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6bb9633bdb98369109e0223528c00351 SHA-1: c8f967946d93f5230916b3a5eb327a292cfe191a SHA-256: db04f83351f012e4bbac643c95351136994f5c45409c5961ec7ad94c81adb5eb
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, with a primary focus on luring users with 'free Robux' or game hacks. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the document body content strongly indicate a social engineering attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the nature of the lures and the embedded URLs suggest a potential for further malicious activity, such as downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://netcdn.co/app/431946152/free-2021-robux-no-human-verification-easy-game-hack PDF link annotation
    • http://library.poltekkes-palangkaraya.ac.id/repository/google-free-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/black-t-shirt-free-roblox-tshirt_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-hack-accounts-password-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/i-want-to-play-roblox-play-free-online_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/free-accessories-alfheim-online-roblox_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/wizard-hacks_GM479516143.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/ghouls-bloody-nights-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/robux-hack-pc-2021_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id/repository/roblox-free-online-game-no-download_GM431946152.pdfIn PDF document text
    • http://library.poltekkes-palangkaraya.ac.id//repository/best-free-spins-for-coin-master_GM406889139.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
font_00_sfnt_off00003544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3544 22440 bytes
SHA-256: c00fd8515423a8db62895bb761813c129376d46c80bd56b9fd0acf6865ef7661
font_01_sfnt_off00006742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6742 19916 bytes
SHA-256: 7aaca061c69dcfcaf34633c9c7f0b7300b7c1aa4fe801bff4c2eb273b0351dd0

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