Malicious PDF — malware analysis report

Static analysis result for SHA-256 a64ae378d953e00a…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 12:23:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 9f7b9d7156d56620e7d98fafa23c6b02 SHA-1: 2c0391aa368df93ab8220cb26e02a9ba97b4804d SHA-256: a64ae378d953e00a19e506f6e66ff17bbc0a5f2a549ee1fe94229bba4d3b93d1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites promising game hacks and free currency, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were directly extracted, the document's structure and embedded links suggest it's designed to trick users into visiting malicious external resources.

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/406889139/coin-master-free-spins-and-coins-today-gift-reward-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/minecraft-client_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/best-free-minecraft-server-hosting_GM479516143.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_004_off0000514b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x514B 24308 bytes
SHA-256: 26596a4bc8f0ccc146b8c844f0b0a95ff191b7167b3d0ab6f1f461929979c7f5
font_01_sfnt_off0000888a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x888A 18404 bytes
SHA-256: 20323906fae34ef48fb3028b175607ed26afea8233a7a83525bcd6516f32abbb

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