Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c8b43394a73e64e…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 12:00:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 302008a17349e0545b8692223819e205 SHA-1: 4aaec9791ba5b9bbfc7acd0752a0982866db05db SHA-256: 2c8b43394a73e64e1590d39c2c2fc8950344d2b4114042a47a405df714fb6a0b
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/406889139/levvvel-coin-master-game-hack PDF link annotation
    • http://samavetpharm.com/userfiles/files/roblox-minion-game-hacked_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/tiktok-free-2021-followers_GM835599320.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-unlimited-spin-hack-apk_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/qtx-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/nuevos-hacks-de-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/wurst_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-robux-quick-easy-cheat_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/mcpe-master-hack-coins_GM406889139.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_off00003272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3272 22860 bytes
SHA-256: f956028074569d1a3eac8ec25103624c35356f6a582f5052a603272230122181
font_01_sfnt_off0000659a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659A 18024 bytes
SHA-256: 17876242a2a0dcf4775db2ff80c40ea767b9a75c5f2b8c6cb08d9d25e5860b33

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