Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d8e66437557767…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 08:03:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 9d11f524d9943197cfa97706b5838232 SHA-1: 51307edd4cef27d29ea605df16e6831a587a7ee0 SHA-256: 86d8e6643755776764315a1146fca97c878a15ba12f1c0f37a9da74fcd453d1a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack redirector, specifically pointing to 'http://netcdn.tw/app/406889139/coin-master-game-hack-app-game-hack'. The document body also contains this URL and other similar lures for game cheats and hacks. This suggests the primary purpose is to trick users into visiting a malicious site, likely for malware distribution or phishing.

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-game-hack-app-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-do-u-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/blue-stacks-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-into-builder-mans-account-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-snow-gentleman-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-with-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-accounts-lost-pin_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robux-hack-911-pastbin_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-free-commands_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-cheats-for-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-with-codes-to-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/what-to-do-if-my-roblox-account-gets-hacked_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-use-cheat-engine-without-roblox-shutting-down_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-on-android-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_off00003049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3049 22548 bytes
SHA-256: 0f34b20c1b35f8c7763aad211e76559d2644413299d0b11905f9fdabb763d3da
font_01_sfnt_off0000628b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 18440 bytes
SHA-256: 571ab4b458d0dac508f9535f575fba5b7e94d60ff2bdf8022b00b4ca59ab09de

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