Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fffad95867a6922…

MALICIOUS

PDF

34.5 KB Created: 2021-06-22 00:17:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 63131ee602359166dd471c77a09e5228 SHA-1: fe252bf7c2cb03bf6beefc4efab3fd38a0e272ef SHA-256: 7fffad95867a6922bcfd4d2866af4cd58b2d513b60e76372b3c614e97d0efa26
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game hacks and free in-game currency, such as 'coin-master-attack-block-hack-game-hack'. This strongly suggests a social engineering lure to redirect users to potentially malicious sites. The ML classifier also flagged this PDF as malicious with high confidence.

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/406889139/coin-master-attack-block-hack-game-hack PDF link annotation
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/roblox-online-free-no-download_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/get-free-robux-by-number_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/can-you-get-roblox-on-nintendo-switch-for-free_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/free-spins-coin-master-apple_GM406889139.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/roblox-games-with-free-vip-servers_GM431946152.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://www.bodyammo.in/uploaded_files/userfiles/files/robux-generator-2021_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_off00002fb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB8 23232 bytes
SHA-256: 244d93b13e1148474b6fa8f97fd52f4f3cd47fe544fdc962f03cc6ba630a04e3
font_01_sfnt_off00006408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6408 18292 bytes
SHA-256: d2ba2b0e7a3f103841e549252e20483683215ddad8ac1b66f82bb541e66cd415