Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cd63ce3ec2cc123…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 11:21:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fe0c69a95f000a4a4a33d587a429f044 SHA-1: 478eb0898bc7660748f7d5b79477e487ffb5fd02 SHA-256: 8cd63ce3ec2cc123c07c0c8ab03bb0ba926d217747d612db4ba9c01eaf9473ee
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/479516143/114-4-hacks-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/pubg-uc-shop_GM1330123889.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-printable-roblox-images_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spin-facebook-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/hack-version-of-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-hack-in-arsenal_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_off0000517e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x517E 24668 bytes
SHA-256: 61a82c9a4dfc4ea324e0c7e37d6c873d931178905a392a112019900e899d47df
font_01_sfnt_off000088c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C3 17684 bytes
SHA-256: adae08d9b008a520cb66bc6de6376e80f8d95342f8060c976aee239a133cf7a5

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