Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fd8e59ae630be27…

MALICIOUS

PDF

34.9 KB Created: 2021-07-02 06:56:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 51dc3a28611e90d77dca6d535616a51b SHA-1: 13724633fdca22a0fd61aa77a53fc05cf64b7405 SHA-256: 2fd8e59ae630be27551dcb07ed9043545889bce20794e2c4f6398c8b05d59c6d
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-free-play-download-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/free-robux-gift-card-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-roblox-accounts-2021-with_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-for-free-no-password_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-bugatti-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/awesome-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-pins-for-sale_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-use-cheat-engine-on-roblox-galaxy_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/hack-robux-trong-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux_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_off00002fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA6 22504 bytes
SHA-256: 35e9fa48c5498543e570919e8c3843b3d4f066b6242d864df3122eb1bbab6751
font_01_sfnt_off000061d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D9 19488 bytes
SHA-256: 6e79ca3612e29a1b804ea8bf3a27d9cf4d47752628b4edc2584f5e9adec6e6f5

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