Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ef98bddbb6e4d5…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 11:24:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 10a4b1f4fbff4dcd2675cc35cf69d383 SHA-1: 15eb8297107e3c88fe4ec5856283ba4cb4f7e7b7 SHA-256: f3ef98bddbb6e4d50b5b3d9bb2c556320d2b1b3b9ed965783243ead1999caa11
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.tw/app/431946152/free-robux-generator-for-kids-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/roblox-hackfree-robux-and-membership-hackaron_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/all-roblox-games-you-can-hack-with-proxox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-for-real-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-2021-android-apk_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/cheat-codes-for-deletive-mod-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/kristjon-15k-robux-reward-hack-tutorial_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-any-roblox-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/hack-boku-no-roblox-remastered-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-jailbreak-speed-hack-codes_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-cheats-2021_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-hack-unblock-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-project-pokemon-dll-hack_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-how-to-get-car-crushers-2-for-free_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_off0000310d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310D 22480 bytes
SHA-256: d4384861aeae642044a700c9cd114141b16069c463f18d23d472ac2152fdc10f
font_01_sfnt_off000062ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EE 19112 bytes
SHA-256: bfd1a83f6845c5ddf7ed6c77f5c6ea2f08ed895d31f12c1f792f1c6eedabde29

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