Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc40b56b8870fc18…

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 14:10:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ae1dc228ed3ad8b94df0c966faf7cfff SHA-1: a4ad72f50f7e859418ab958a9986b7814735b4bd SHA-256: cc40b56b8870fc18db99304408680d5b9edaf5881a7a4b13d2997f3ec29ce41a
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 0.9971

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/how-to-get-minecraft-windows-10-edition-for-free-game-hack PDF link annotation
    • http://sudamericarural.org/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://sudamericarural.org/images/robux-converter_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/free-robux-real_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-devil_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://sudamericarural.org/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://sudamericarural.org/images/microsoft-bing-free-robux_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_off00004c17.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C17 24260 bytes
SHA-256: 21073d11652e1e6139475d3ca9f36b0583fb1202e0ff8f3fcc8f76b97393e5de
font_01_sfnt_off00008219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8219 18524 bytes
SHA-256: 758265ab9626b01b7f82acdeb793963e34ce825989d987f26b8b838bd6c44d94

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