Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb51588d89194905…

MALICIOUS

PDF

48.0 KB Created: 2021-06-02 06:04:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fb876deb432ceb41d76b2af19193fbf2 SHA-1: 48523aa128a9a3c600f91d37e66cc98dd5b81976 SHA-256: cb51588d89194905145859451fe91b5d36253b2bb34479402b2a4869edd7f363
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/how-to-hack-roblox-to-get-robux-game-hack PDF link annotation
    • http://eurocomes.com/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/spin-coin_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-earn_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://eurocomes.com/images/how-to-get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://eurocomes.com/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fd6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD6 25860 bytes
SHA-256: ba250c78bb408275957399ba7b2d5bd5391b84a7762cefd49c45eda1509fe238
font_01_sfnt_off00008ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE7 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000978f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x978F 18588 bytes
SHA-256: 6723e17a0e3ea7e17da9fa5ee91cb22fe0fa4706a6f3d09ae44dda015c08872b

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