Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace1c5940bb224b8…

MALICIOUS

PDF

46.4 KB Created: 2021-06-08 21:11:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3d2a804b463ea2418726542b5a94a73d SHA-1: 526014249d464a6e1cc7a88fea49052e851d56b7 SHA-256: ace1c5940bb224b887dc8df5e818a8fec9066e6c793a835dc363eef3fcf20e2c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9832

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.tw/app/431946152/how-to-get-free-robux-on-ipad-2021-game-hack PDF link annotation
    • http://dieter-sauter.com/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-20-body-free_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/all-free-offsale-items-on-roblox-wika_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-mm2-how-to-get-free-diamonds_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-avatar-free_GM431946152.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_off00005092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5092 27752 bytes
SHA-256: 04375b4fc181c4ab90b35da77649b9245327dca1137b7de624c9843402dcc6b5
font_01_sfnt_off00008fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE4 19260 bytes
SHA-256: a85cb0126523c1c86496b47a51a3e223b1d996361e1b00a4b5885fb5604f4b75

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