Malicious PDF — malware analysis report

Static analysis result for SHA-256 c52de1fa5e865608…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 21:19:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 9d8aa20fdd39e88e3b6c5e9410c36985 SHA-1: 5ef6ec073112f91d5bafbc104c6108a6091faa4c SHA-256: c52de1fa5e86560836b7ff8da8949ca32d23dbadd2e66c0af1117ad4ce8f7793
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a high-confidence heuristic firing indicating it's a game hack lure. The primary URL, http://netcdn.co/app/431946152/speed-hack-script-roblox-pastebin-game-hack, is likely intended to lead the user to a malicious site. The document body also contains this URL, reinforcing the lure. No scripts were extracted, but the presence of embedded URLs and the lure suggest a phishing or redirection attack.

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/431946152/speed-hack-script-roblox-pastebin-game-hack PDF link annotation
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-1-step_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-get-free-clothes-on-roblox-2021-no-bc_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-free-avatar-items-2021_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/yt-how-download-script-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-do-people-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/robux-hack-exe_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/pubg-uc-rate-in-india_GM1330123889.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/comment-hacker-dans-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/rainbow-path-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-aimbot-hack-v3rmillionm_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-mod-version-free-download-ios_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/login-robux_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_off00002f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1D 22104 bytes
SHA-256: 31e939fefe748f23c7db4d1d9d5edfb7949f908a801607a272ac7e7170054213
font_01_sfnt_off00006000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6000 19384 bytes
SHA-256: 1eabf72ae74b34f70080179326d2c1986b4586ebd7ada5e8af82c0018b2d4e34

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