Malicious PDF — malware analysis report

Static analysis result for SHA-256 e850217e7feb2a2b…

MALICIOUS

PDF

34.6 KB Created: 2021-07-03 20:42:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7fa5c1fd76a77ace9969a4e5d7f8fca2 SHA-1: 1b40524f24590aad84a1b8dd96c587fde0125b9a SHA-256: e850217e7feb2a2b86ab5d655806a223ade064d4d41ccac86f72bc49e5eacaf6
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.tw/app/835599320/tiktok-viewer-free-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-app-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/http-get-free-robux-eu5-net_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-hack-to-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-giveaway-2021-live_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/flip-master-free-coins_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/hacker-web-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/hacker-vs-noob-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/can-you-really-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/ninja-legends-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-cheat-on-roblox-to-get-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_off00003143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3143 22856 bytes
SHA-256: ec541f444d6fddaa4e519743aeb9a69fc02b4f4345d796b8494593675ba2e7d3
font_01_sfnt_off00006498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6498 18268 bytes
SHA-256: 93eee72dea4227dcc5800322e3f0c8a3d1ec1d67827839ae5243ce7f2512eb80

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