Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c60b4106ad9178…

MALICIOUS

PDF

34.8 KB Created: 2021-07-07 19:14:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c5eb0fc3726034667b34afa7e0bd9bb1 SHA-1: 0de343518012e9ea238e98dc99d938143731cb7c SHA-256: 08c60b4106ad917891fb38ca0b2b7f721127150bab1e7e19aa7edf7c29ba5b04
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains lures related to game hacks and free in-game currency, directing users to external URLs. The primary URL, http://netcdn.tw/app/431946152/how-to-gift-robux-on-mobile-game-hack, is associated with a game hack redirector. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it being used for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-gift-robux-on-mobile-game-hack PDF link annotation
    • http://knjiznica-oroslavje.hr/files/free-roblox-accesories_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/www-roblox-hacker-com_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/download-roblox-on-ps4-free_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.knjiznica-oroslavje.hr/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://knjiznica-oroslavje.hr/files/how-to-get-free-robux_GM431946152.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_off00002ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF6 22576 bytes
SHA-256: eb8ea582e836b07768c47f6ef83ca8f098f0a3dcb33d97c61ead14aef4652a68
font_01_sfnt_off0000625c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625C 19212 bytes
SHA-256: bc5fdf2573ba02d8ebbd4383ba1ec7dafda423df0baa75127e805848098bb58d

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