Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf5c8e471f86c237…

MALICIOUS

PDF

48.7 KB Created: 2021-05-12 14:31:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b3eb29f47fc2d55fb64886de6b785e93 SHA-1: b07d1c516ed960a1df7c93f3566fc56c756edb87 SHA-256: bf5c8e471f86c237090cf651adc9a328ebb888067f3050d8c3a78d1f54c93c2a
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 0.9228

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-do-u-get-free-robux-game-hack PDF link annotation
    • http://slim.sisminkada.net/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-generator_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-bobux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/moonactive-coin-master-free-spins-link_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_003_off00004c37.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C37 28600 bytes
SHA-256: 05a1f2a2d3f7a5e0f7cbde68b9db6aa7981f3b66317f8b0ebe72daae193803e4
font_01_sfnt_off00008e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E20 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009ac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AC8 18636 bytes
SHA-256: ab6f51fdb1eed883fd21dff3bd0336e3a1b816e6c21a8924207bfe84ed9a007e

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