Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8010534a00edd5d…

MALICIOUS

PDF

34.3 KB Created: 2021-06-19 17:49:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2bd449f674bf883c0da08cbe7e64a80f SHA-1: 93d1ffe15be3996b170ea38fc011728a117e63ff SHA-256: f8010534a00edd5d76544d31d8462ed4b9d60504d20e05bfe3451f2cff76b4cc
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.co/app/431946152/how-to-make-free-clothes-on-roblox-game-hack PDF link annotation
    • http://digilib.stie-yppi.ac.id/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/best-ways-to-make-robux-in-roblox-for-free_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/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-robux-for-free-instantly_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/hacks-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-generator_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-codes-no-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://digilib.stie-yppi.ac.id/repository/free-robux-hack-no-human-verification-or-survey_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_off00002f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F94 21876 bytes
SHA-256: 1db91cd4fc46c979358f3357ed1ffe48df1c9878e3343e846f71669b8631d68a
font_01_sfnt_off00005fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC1 19448 bytes
SHA-256: 35d92f57effa1bef1a0e725ac6dfc0d436a4e0cffdde0ab1ee06a0afe85e7f56

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