Malicious PDF — malware analysis report

Static analysis result for SHA-256 7848ac26ea0ad6f1…

MALICIOUS

PDF

36.3 KB Created: 2021-07-05 14:45:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 34794bf04d9acedcede7b631fcb6be7c SHA-1: 0a536452684163843cef8eda615d7ab785cca269 SHA-256: 7848ac26ea0ad6f1cec95b8784893eede3339a0ca016e5957e26319057be3622
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to "Coin Master Redeem Code Free" and links to a URL identified as a game hack redirector. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to direct the user to a malicious site, likely for credential harvesting or malware delivery.

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.tw/app/406889139/coin-master-redeem-code-free-game-hack PDF link annotation
    • https://www.knjigebuducnosti.com/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-master-free-spain_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-hack-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-menu_GM479516143.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/robux-hack-2021-android_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/how-to-get-robux-for-free-hacking_GM431946152.pdfIn PDF document text
    • https://www.knjigebuducnosti.com/files/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34BA 23916 bytes
SHA-256: 4551ad2bcbf28b38fd093d8020c8529aaacd39081eaa09eac4577f6f0467c039
font_01_sfnt_off00006b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B31 18432 bytes
SHA-256: c68eb17dffb0d99ef1411e37b8b483e0576a304e68482a2bd2f60f2c06c0ac6c

Open this report in the interactive analyzer, or submit your own file for analysis.