Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec580c0372a946e2…

MALICIOUS

PDF

41.2 KB Created: 2021-04-23 09:01:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 43b468e8882ab149c1f6a2101f7ae9ad SHA-1: 22c0c6415ba2aedd8e4e1f58cba5fede061acb32 SHA-256: ec580c0372a946e25831b7a40a0bf61ea4d97e8f56c7fc2fdc2d52e3bd8e2715
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link to a 'game hack' website, identified by the PDF_GAME_HACK_REDIRECT_LURE heuristic. This lure is designed to trick users into downloading potentially malicious content or falling victim to a scam. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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://netsecure.pro/app/431946152/roblox-theme-park-tycoon-2-cheats-game-hack PDF link annotation
    • https://www.ghknights.org/images/smurfs-backpack-gives-free-robux.pdfIn PDF document text
    • https://www.ghknights.org/images/how-to-get-bloxburg-for-free-on-roblox.pdfIn PDF document text
    • https://www.ghknights.org/images/how-to-hack-roblox-on-a-tablet.pdfIn PDF document text
    • https://www.ghknights.org/images/full-inside-the-world-of-roblox-pdf-free-download.pdfIn PDF document text
    • http://ghknights.org/images/free-robux-tool-download.pdfIn PDF document text
    • https://www.ghknights.org/images/roblox-new-free-items.pdfIn PDF document text
    • http://ghknights.org/images/roblox-spawn-cheat.pdfIn PDF document text
    • https://www.ghknights.org/images/roblox-shirts-for-girls-free-shipping.pdfIn PDF document text
    • https://www.ghknights.org/images/event-free-robux.pdfIn PDF document text
    • https://www.ghknights.org/images/robux-promode-hack-2021.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_003_off00004149.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4149 26360 bytes
SHA-256: 3d872cdf4091f912b1afaea68252ec9bce40f098c6533a9438b551356e9bd35c
font_01_sfnt_off00007c8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8C 19172 bytes
SHA-256: 378c7e0f847d299531cf10ef79e3b8ee92dff8b8c85b980ce728450c3e5c81b4

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