Malicious PDF — malware analysis report

Static analysis result for SHA-256 33aa8c7d56afe05a…

MALICIOUS

PDF

42.3 KB Created: 2021-06-02 06:09:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f2e874a67d83f55a2d2748c99f05aed6 SHA-1: acc3cf5bfdcac8c99a0dfd3609806cf0820c7d24 SHA-256: 33aa8c7d56afe05a79ef67777e177aa457ce72ca0754cc692535c40a02dad104
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to "free generators" and "game hacks" for TikTok verification, directing users to a suspicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially malicious content. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/835599320/how-to-get-verified-on-tiktok-for-free-2021-game-hack PDF link annotation
    • http://apeh.ro/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://apeh.ro/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://apeh.ro/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://apeh.ro/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://apeh.ro/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://apeh.ro/images/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://apeh.ro/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://apeh.ro/images/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://apeh.ro/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://apeh.ro/images/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://apeh.ro/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://apeh.ro/images/download-hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://apeh.ro/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://apeh.ro/images/smart-lodhi-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://apeh.ro/images/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://apeh.ro/images/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://apeh.ro/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://apeh.ro/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://apeh.ro/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://apeh.ro/images/coin-master-free-spins-link-download-ios_GM406889139.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_004_off00004ab6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB6 24724 bytes
SHA-256: f06e5c8db783eaf21148bc74b00e27fa06baa7f23dba5151be54db0d7cbb1813
font_01_sfnt_off00008210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8210 18328 bytes
SHA-256: 1054070171948e30c43aa2372c28bb4586f99f9ebf927238267b96eb5d2dcf67

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