Malicious PDF — malware analysis report

Static analysis result for SHA-256 961c71493e410514…

MALICIOUS

PDF

34.4 KB Created: 2021-06-25 11:51:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fec81d4ec47dbde26ce9d51c73fe05c2 SHA-1: cc443f6692ea5707d07082a5dd61435535451ff7 SHA-256: 961c71493e41051488ac9b4fa75bda9ae7541b9600de333fa83973ff960093a6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as game hacks and generators, specifically targeting popular games like Roblox and Coin Master. The primary link, http://netcdn.co/app/431946152/roblox-hack-robuxian-secret-forum-hack-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the presence of embedded URLs and the 'GAME_HACK_REDIRECT_LURE' heuristic strongly suggest the document's intent is to lead the user to a malicious site, likely for credential harvesting or further malware delivery.

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-robuxian-secret-forum-hack-game-hack PDF link annotation
    • http://zagorjeadventureteam.hr/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-group-roblox_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/roblox-cheat-engine-how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/mcpe-master-coins-hack-download_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-to-hack-roblox-accounts-with-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/infinite-money-roblox-injector-hack-pizza-place_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://zagorjeadventureteam.hr/files/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/get-more-robux_GM431946152.pdfIn PDF document text
    • https://www.zagorjeadventureteam.hr/files/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE2 22288 bytes
SHA-256: b114a31ae769736931065192f1000bba8da7cb5dccf4ad2e1d52f17a394eb4e7
font_01_sfnt_off0000605b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605B 19444 bytes
SHA-256: 3cdcb214cd52736c13708ef01a6fa2f43ab33c345fdd54f7628bcdd728c31ea6

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