Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5fc72646cb4ee47…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 13:30:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ad13cab88d698b6660fd2706523e5da6 SHA-1: 783b0a5e76df3b6e5cb50ad3fac2d273a3ec0d11 SHA-256: b5fc72646cb4ee47969fca7d29de9eb6fe2b422f77a777898b60230cf3754c48
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack redirector, specifically mentioning 'coin-master-free-spins-2021-game-hack'. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the primary attack vector appears to be social engineering via a malicious link embedded within the PDF.

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/406889139/coin-master-free-spins-2021-game-hack PDF link annotation
    • https://amozeshportal.ir/assets/uploads/pages/files/free-tiktok-hearts_GM835599320.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/hack-weight-lifting-simulator-2-roblox_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-hack-tool-download-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coins-master-hacks_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-robux-legit-2021_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-free-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/roblox-girl-clothes-for-free_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-hacks-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • https://amozeshportal.ir/assets/uploads/pages/files/minecraft-free-exe_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_002_off00003255.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3255 22752 bytes
SHA-256: d567ddcf6bf6cfe7abeedcd7acc515d4630c5314c7db76939ffe1c2e13efcb34
font_01_sfnt_off0000655f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655F 18576 bytes
SHA-256: a126babb65047b6746617d7d7f27a00b485a4a24246b96e57b4b97a03add53e0