Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1a4a5786a7bc45a…

MALICIOUS

PDF

43.5 KB Created: 2021-05-17 03:31:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 08d1675462ecb130e92cf55518fcb3ee SHA-1: 34e02843e3ea60e2777ffffb4c67e1ffb13d8518 SHA-256: a1a4a5786a7bc45a9797b185e38da1a52c8e3c59cf300c01803a5ad5030f0d4a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed to lure users into clicking on them by promising game hacks or free currency. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence suggest the document is designed to redirect users to malicious sites, likely for further exploitation or phishing. The document body itself is heavily obfuscated and contains some of these URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/www-robux-com-game-hack PDF link annotation
    • https://tckontrola.hr/files/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/can-i-have-robux_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/how-to-get-java-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/wurst-minecraft_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://tckontrola.hr/files/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://tckontrola.hr/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/free-spins-coin-master-2021-glitch_GM406889139.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_off000049e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E4 26160 bytes
SHA-256: 91b5667611951b96bdadd426365fb76da0ea6f08dd3f5cfb348e5b6469be75bc
font_01_sfnt_off00008737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8737 18472 bytes
SHA-256: 5fb9c020dfaedbf87c4a2d1928ca13225aae827a6af2df864dcdcd5b9ec7e552

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