Malicious PDF — malware analysis report

Static analysis result for SHA-256 79951b33818d09ed…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 14:07:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f75fb79602f24d77787ab89b49a149bf SHA-1: ab22b775ab4c38dde29ce6edc9ab8bca1a82ca4f SHA-256: 79951b33818d09ed9a487e7a6b48b1de45b8dd0588787ba78dd7bf07d0a834bb
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/roblox-hack-slurp-game-hack PDF link annotation
    • https://library.stikeswnpalu.ac.id/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hacks-for-texting-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/make-free-robux-com_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-jailbreak-hack-through-walls-windows-7_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-scam-messages_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/is-roblox-free-on-nintendo-switch_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-use-wurst_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-dll-hack-free-download_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-assassin-knives-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-cheat-in-roblox-find-the-doges_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/is-minecraft-free-on-xbox_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
font_00_sfnt_off00002f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F24 22304 bytes
SHA-256: 29ec864ba34a8c189a4ef0eb057542c3c1d479649ac37a86541ffc5f73918cac
font_01_sfnt_off00006082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6082 18972 bytes
SHA-256: bd1a7779c32d200d9c08aed728e3401cbff2b927769d409101745205254de5f3

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