Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74e5895c8bded57…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 04:36:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 688a4a75cbc41dc1bd0c81bbae87051e SHA-1: f2ccd7ab9dc4b120dc0cdd36e2e8234897084459 SHA-256: f74e5895c8bded573fcf49456fe4c8adcc424d63d5aead2a8777be33cc23874d
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 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-pet-food-game-hack PDF link annotation
    • http://library.fisip.upnvj.ac.id/repository/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/god-roblox-hack-script-fe_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/roblox-free-robux-scam_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/when-do-hackers-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.fisip.upnvj.ac.id/repository/make-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
font_00_sfnt_off00003470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3470 23056 bytes
SHA-256: 0b070c0ebbb835c189d4a14622b76275cbe371623049dc7fbdee7a7ef41ad7ea
font_01_sfnt_off00006858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6858 18324 bytes
SHA-256: 10ce9c6a1e11ec0ca6b3660bcfd00cfe2a094fed43490c9d06fb1f9b5d2d4740

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