Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb48d0662bb5cc06…

MALICIOUS

PDF

44.0 KB Created: 2021-06-07 15:04:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e214a229b52d503d4689f13738e0499d SHA-1: 1eece16c9b797147774c432142403ede8ec0c749 SHA-256: bb48d0662bb5cc065f3b5c003875fc2060ea0c295ae28176f8975368939591f7
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 0.9865

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/free-lvl-10-roblox-exploit-game-hack PDF link annotation
    • http://szekelymozes.ro/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/robux-prices_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://szekelymozes.ro/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://szekelymozes.ro/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://szekelymozes.ro/images/minecraft-pe-free_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
stream_004_off00004fb3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FB3 24672 bytes
SHA-256: 5b3a0d0075f85d43c7c0ab13ad84b19d804b69474bc663a4c906d6812686d3c9
font_01_sfnt_off000087d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D7 18740 bytes
SHA-256: 867e86e92a8db9beeb20c8a60ec3224eab89e9be62f34828386f53fc07a8278a

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