Malicious PDF — malware analysis report

Static analysis result for SHA-256 3222166f9f5a5a91…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 21:20:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7f3b481ee89484139b5b1738a7a6578f SHA-1: 2ae3999176a6a1d02e32bfb95113755720e78c97 SHA-256: 3222166f9f5a5a91e6f54bc8cc2b9aecc348735d7fcabaee1a6a0ec2958d2e58
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a lure for game hacks and free in-game currency, directing users to a malicious URL. The primary heuristic indicates a game hack redirector, and the ML classifier strongly flags the PDF as malicious. The document body and extracted URLs reinforce the lure of obtaining game cheats, likely leading to a malware download or phishing attempt.

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/coin-master-reward-link-2021-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/give-me-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-hack-accounts-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/check-cashed-v5-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/como-poner-hacks-en-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-veil-exploit-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/oprewards-hack-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/well-hack-roblox-pc_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/madcity-free-server-private-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/dragon-ball-online-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-can-u-get-free-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_off00002d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1A 22508 bytes
SHA-256: 305d62767293898f423ed5f36efc703ff533890195c94288a0164b050c9bc57f
font_01_sfnt_off00005f5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5B 18744 bytes
SHA-256: 9742e917eaee576a08eb7c2de5a8b19b3ef10f2b928cd9d8b8b61d70ae14d143

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