Malicious PDF — malware analysis report

Static analysis result for SHA-256 99df68d2ef1a8dce…

MALICIOUS

PDF

32.3 KB Created: 2021-07-22 14:53:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: eab6d68f55120e3ca8f55b650f8e84bb SHA-1: 0b15121aae2ffd7059ced31781c2825d0fc23f8a SHA-256: 99df68d2ef1a8dce25769ab7b27cbdf67bd18e27eb3865665b484b610653e217
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link to 'http://netcdn.tw/app/835599320/how-to-get-free-followers-on-tiktok-game-hack', which is identified as a lure for game hacks and free generators. The document body also contains similar links and a call-to-action button, reinforcing the social engineering aspect. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious redirection attempt, likely to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/835599320/how-to-get-free-followers-on-tiktok-game-hack PDF link annotation
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-tiktok-likes-trial_GM835599320.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/setiadi/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://perpus.poltekkesjkt2.ac.id/respoy/repository/minecraft-free-unblocked_GM479516143.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
font_00_sfnt_off00002c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C64 22404 bytes
SHA-256: cbacdb2520c93f0c233aa08b888196ebb66fa884358c6d997cc83bae7eacb630
font_01_sfnt_off00005dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFE 17692 bytes
SHA-256: c8a0034b4012066e27b368389264813a3515151838273d971ed31104f84b04bc

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