Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1fb897121703d04…

MALICIOUS

PDF

40.8 KB Created: 2021-05-19 12:40:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 836efd666ac44fd2f451bb8c3cd60ad7 SHA-1: 810ce49ab83203fc1fe0b2dd20d2770b309e1c3f SHA-256: f1fb897121703d04b72119eea705a58a96193df80beeb84a21512dbe50d88d35
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 0.9971

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 https://netcdn.xyz/app/835599320/what-tiktok-free-views-hack-game-hack PDF link annotation
    • http://tckontrola.hr/files/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/www-robux-com_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://tckontrola.hr/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/como-hackear-coin-master-2021-espaol_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/rbx-com_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
stream_003_off00004766.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4766 23600 bytes
SHA-256: c9da63e63312155c103e1b3eb7ad2d9ea4f06b9c8ad0f3537be7853533df8d48
font_01_sfnt_off00007cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF4 18348 bytes
SHA-256: 319cfd2bc4faa6371d64cb524aa70a8a40d02c2304822c0164edcf8cb7c6b9ee

Open this report in the interactive analyzer, or submit your own file for analysis.