Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd95c924c4d39262…

MALICIOUS

PDF

35.3 KB Created: 2021-06-18 15:40:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4954a7102b57b4f97ca5b9c2250a7b47 SHA-1: 695c89be03a8180e488e03443d6e0cc65f792c0a SHA-256: dd95c924c4d392620de6aa0e5eb428d1e2273cd33fa9b1403a1571453649126a
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/can-you-get-banned-from-hacking-roblox-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/royalty-free-roblox-background-forest_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/give-me-free-robux-plz_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-free-hack-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/can-i-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-video_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/nilamyt-free-robux-socialblade_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-a-free-skin-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-2021-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_off0000322b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x322B 21924 bytes
SHA-256: 9e009304d5360f89c020a2845b35d4c0e316511e065645675b614da32f5a2488
font_01_sfnt_off000062c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C7 19780 bytes
SHA-256: 327e11aea97a052e492526f1be8624ad66aad10d4210f89e13ff187f0a169eb6

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