Malicious PDF — malware analysis report

Static analysis result for SHA-256 72bbc26396db9d79…

MALICIOUS

PDF

33.1 KB Created: 2021-06-30 03:06:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 02339ea0e90f9bcd661f21bc69af06b5 SHA-1: 8086c845700ce8737ce5cf17860a07ca703fe13d SHA-256: 72bbc26396db9d79b5520e108958c43f0dd6d06bf660a6a6db8b45be8e0bd041
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 0.9824

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/free-robux-codes-2021-june-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/roblox-diamond-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/wwwroblox-freecom_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-giveaway-2021-live_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/veil-roblox-hack-paid_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-launcher-hack_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-app-free-apk_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/download-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/cheat-engine-roblox-jailbreak-money_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-transparent_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-on-roblox-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/conquerors-3-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/roblox-strucid-hack-mac_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-ot-get-free-robux-not-clickbait_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-roblox-games-for-kids_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/where-to-find-roblox-speed-hacks_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-free-computer-game_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_off00002960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2960 22392 bytes
SHA-256: 0d31ba537972b9a91fc252795b73f925fd3c3bac712e79ad84adc83cf7191759
font_01_sfnt_off00005b34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B34 19456 bytes
SHA-256: 3fbe3c5d8f64f23211d09628c3f19e1ec34d075427fc79e6d4d2bdcdfd2df7da

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