Malicious PDF — malware analysis report

Static analysis result for SHA-256 25239db6a4ff3588…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 14:42:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 46c87deae4fb724866e9b1bef1014503 SHA-1: e787feec332b10ec644e57a0a9099896842dbc3d SHA-256: 25239db6a4ff3588607c211a452b5968de7cd7e8e3bc4edbb8664d580d407609
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 0.9864

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/431946152/where-to-get-robux-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/this-code-gives-you-1-billion-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-mod-version-free-download-v344_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-free-robux-easy-hack_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
stream_004_off00004fbf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FBF 27712 bytes
SHA-256: e4794dbd2e8875dd14657d469531cb7f5d4341f421ee7662a0a3e80ecac88915
font_01_sfnt_off00008e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E86 18316 bytes
SHA-256: 5d084a82250710db6b98a0dc3f702c66b679dd89c140e62c2649391066269139

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