Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a4fa963798836ff…

MALICIOUS

PDF

44.2 KB Created: 2021-06-04 03:15:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cd93072dd98955712bfce1e06991ee48 SHA-1: aa171af80b97e3939d738d1cd6775063032103f8 SHA-256: 4a4fa963798836ff7e243413ca8f290e8d82afd905bdd02920d235f72063075a
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 0.9865

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.online/app/479516143/minecraft-redeem-code-free-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/www-cheatsk-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-clothes-and-hair_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000503c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503C 25552 bytes
SHA-256: 21c3ab81ac784c55b7a3aa5551037484009a4b4b25a3c87bcb99add0fcdf5a25
font_01_sfnt_off00008aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA9 18144 bytes
SHA-256: cc19f71067fb84b21b4f81fd44d646587f5653a8a3073e37b17122851b8ee9dd

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