Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed95ea2c25839ceb…

MALICIOUS

PDF

42.9 KB Created: 2021-05-12 18:13:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b1536383f83a38fcb31b6d74850d2c37 SHA-1: 0487f1daad30ce5e0640e863ab32da93f4a0273d SHA-256: ed95ea2c25839ceb5ab559c41e0a20f02e3c49dbba315bec06ec8c0c8e3067fd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body, though heavily obfuscated, contains references to game hacks and generators, reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the redirector URL which likely leads to a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-on-computer-free-game-hack PDF link annotation
    • http://greasley.website/images/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-roblox-adopt-me-pets_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/how-to-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://greasley.website/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/hack-coin-master-1_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_off000048a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48A5 27132 bytes
SHA-256: 8a92dd76502b1ca2c92b09abdbaccbc1f734fa6376212f9642e505349e176117
font_01_sfnt_off000085b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B6 18284 bytes
SHA-256: ce17ca81234478eae2e4d5d82743db6ecf39d6315d037818deed1e54c2e5b17b

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