Malicious PDF — malware analysis report

Static analysis result for SHA-256 6085c29888b044fa…

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 00:02:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f40577d7e2bc3649107b8ab36a2f9d2d SHA-1: b4e72502821221fd6ec858780a3e6ddfbbcc73f3 SHA-256: 6085c29888b044fae48cd3360927111e5e1b7b7da6f3e10042a1bbba48ffce10
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains multiple links and a prominent call-to-action related to 'free Robux' and game hacks. The heuristic firings confirm that the PDF links to external URIs and specifically targets users with game hack lures. The ML classifier also strongly indicates maliciousness. The primary attack pattern involves tricking users into visiting malicious websites that likely host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/ways-to-get-free-robux-game-hack PDF link annotation
    • http://greasley.website/images/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • http://greasley.website/images/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://greasley.website/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://greasley.website/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/coin-master-app_GM406889139.pdfIn PDF document text
    • http://greasley.website/images/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://greasley.website/images/get-free-robux-2021_GM431946152.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_off00004966.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4966 26868 bytes
SHA-256: 335496147ebae8ad17fb4c70734da7dcb9548415d8c231adfb522113c545e3a4
font_01_sfnt_off00008859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8859 18724 bytes
SHA-256: b2cd5ec598a8c260812e966e9710fb38f03066217a6d0ec8f431d8a9dca8af42

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