Malicious PDF — malware analysis report

Static analysis result for SHA-256 907f0d0113937601…

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 13:54:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cfee17b50b09fb791661421faabc8622 SHA-1: c5ff7783c4d50a88f08ec9b6dd31c03946531124 SHA-256: 907f0d01139376012c8e69970ef01a25d669b645eaed444b4acb9e5e9ec35982
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/431946152/free-robux-codes-2021-real-game-hack PDF link annotation
    • https://tckontrola.hr/files/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://tckontrola.hr/files/when-tiktok-free-download_GM835599320.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-get-free-robux-easy-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/my-account-keeps-getting-hacked-on-roblox-what-to-do_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/cheats-power-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/how-to-hack-onto-someone-elses-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/comment-hacker-des-gens-sur-roblox_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_off00002f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F49 22032 bytes
SHA-256: 256b684f0e59e334b0f59298b039051fe9c4d547d600ee611513137c9b586d23
font_01_sfnt_off00005fdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDF 19364 bytes
SHA-256: 58b5540d62ffcbcd0cd09a8102d97fc092b94db7ea089f1030660d7870c6f7c3

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