Malicious PDF — malware analysis report

Static analysis result for SHA-256 3081809c460377bf…

MALICIOUS

PDF

36.4 KB Created: 2021-05-23 06:09:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8ff30c6b5b7f46f60b33381a800a345e SHA-1: 7ce93f8fd4b99d25b118e255c2b82dcb8af8a567 SHA-256: 3081809c460377bfb9a5cdae6653d77b4a4e352862ab083716e1bae41baf1b28
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that are disguised as free game hacks or generators, such as 'minecraft-mac-free-game-hack'. The presence of these lures, combined with the ML classifier flagging the PDF as malicious, indicates a phishing attempt to trick users into downloading potentially harmful files. No scripts were extracted, but the document body contains embedded URLs that are likely used to host or redirect to malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/minecraft-mac-free-game-hack PDF link annotation
    • http://www.fvsspa.com/images/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • http://www.fvsspa.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://www.fvsspa.com/images/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://www.fvsspa.com/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://www.fvsspa.com/images/coin-master-hoe-to-get-extra-free-spins_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
font_00_sfnt_off00003652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3652 24824 bytes
SHA-256: 5397385e99fa7f06d4d56ae0529631b4ac2bf423eea4087aaa7c9d505bfc347d
font_01_sfnt_off00006f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F1B 17568 bytes
SHA-256: 2778e064ee8e4e3a4bd3984a17bb7eaaeefaa41a67eb131b8ade69fe1653bbfc

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