Malicious PDF — malware analysis report

Static analysis result for SHA-256 525bd42dbf5283b0…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 16:03:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 001443bf64ade53ce39ab062cff8b5d6 SHA-1: d2d4c0959e4e5459a3173c8785d312f833414f7d SHA-256: 525bd42dbf5283b0f929367479be3a43cb041a7b77b3a251d25d911abbbc3ce5
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.co/app/431946152/roblox-hack-robux-hack-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/money-cheat-for-ro-port-tycoon-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/is-minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-robux-hack-2021-ios_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/super-nice-mml-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/ways-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-injector-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-hack-downloa_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/dead-mist-2-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-gamepass-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/gift-card-roblox-free-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_off00002ee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE3 21920 bytes
SHA-256: 22a95778139c6542d538c44782964657785d07e76a4387d61a05de4bdb117489
font_01_sfnt_off00005f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F18 18796 bytes
SHA-256: 929753544494169db2d6950b53794e592d39fb9dfc9a77f5e60a64748c486ad3

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