Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2c322c986dc3ab2…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 10:06:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3f75e0a8d6fe5d6dffb0529e0cb6c9a4 SHA-1: abbb66e7deffc17edf4e63d23434e5a0d3ddcf25 SHA-256: f2c322c986dc3ab2ab3be87ca037e3b0f3adfaf573afa334623289aa6e284784
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/431946152/robux-generator-without-verification-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-genorators_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/funny-tshirts-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-20210-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-paypal-accounts-with-money-for-roblox-with-card-code_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hacks-that-work_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/world-conquest-free-siterobloxcomgames_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_off0000314d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314D 22716 bytes
SHA-256: 8f8ea9a90c07b499baa47fcffbd18defb8d20d9c21b0dbb4cd672070185320a7
font_01_sfnt_off0000644a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644A 19276 bytes
SHA-256: 128dc781028791df6bef372b82492d53ee10555b1aa15fee5127b4d2acfdd3f4

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