Malicious PDF — malware analysis report

Static analysis result for SHA-256 6aa2c3682458303e…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 17:52:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 74b7cde2d1e5a1502c2fbe18c7728d2c SHA-1: d85dd1e45fb8ffcb94171185813bbd4d961e9e18 SHA-256: 6aa2c3682458303e7a75bd9a10ddf9c457ade5d18a26c0c39ca349ae7ebe3e48
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/roblox-hack-download-game-hack PDF link annotation
    • https://itamleek.net/uploaded_files/userfiles/files/free-account-for-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-anime-skins-roblox_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/obby-gives-you-free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-do-u-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-actually-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/cheat-codes-for-prison-escape-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-robux-legit-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-hack-roblox-for-robux-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/mega-roblox-hack-engine_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/free-robux-hack-pc-2021_GM431946152.pdfIn PDF document text
    • https://itamleek.net/uploaded_files/userfiles/files/hack-download_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_off0000317c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x317C 22120 bytes
SHA-256: 6696e4ebff0b22fcc473dfb8cbd9eb3cc4eca1da99be59e1157effcd5b649b5f
font_01_sfnt_off0000623e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623E 19160 bytes
SHA-256: 20e8ef43e122870d61f5f3bdc7785651657b4c6f8223466300bbb50b4def8f00

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