Malicious PDF — malware analysis report

Static analysis result for SHA-256 40cc8cc5e013e8b2…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 14:39:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 518937369ddef3ffa5e6d449a87b59a3 SHA-1: ec64ad0025fa81d45765c20402343d1fd324ef87 SHA-256: 40cc8cc5e013e8b2ea2af6fe71719b33370f019981941c295852344c24e4f122
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that redirect to websites advertising game hacks and generators, such as 'roblox-rocitizens-money-hack-game-hack'. This indicates a lure-based attack pattern designed to trick users into visiting 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/431946152/roblox-rocitizens-money-hack-game-hack PDF link annotation
    • http://jbtlive.com/assets/CKImages/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/minecraft-items_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/l-free-robux_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/how-to-get-the-stylish-animations-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/how-to-get-free-money-in-the-plaza-roblox_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://jbtlive.com/assets/CKImages/files/coin-master-spin-link-free-download_GM406889139.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_off000031d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D3 22064 bytes
SHA-256: 4df157d4d500cb77b77ed90f1f8f4b7b240f4acb6f94a0b5362f9231d234087e
font_01_sfnt_off000062cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CD 19336 bytes
SHA-256: 51b2e6b317f4c758e88bec058572dc1b8844492c0104bd0cfc958498d0e38041

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