Malicious PDF — malware analysis report

Static analysis result for SHA-256 26498cf1fa56ee42…

MALICIOUS

PDF

44.3 KB Created: 2021-06-09 10:33:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ca44c8eca54acbd6e3a3aa71ef54f8af SHA-1: bb4d6c479ffb3475e89354983b10e1308e486f3e SHA-256: 26498cf1fa56ee42141326f95f9d77b8788701c2aaef774065d96cefb0adcfd6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks, directing users to a URL that likely serves as a download page for malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple game-related lures reinforces the deceptive nature of the document. The primary IOC is the external URI that acts as the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/roblox-lvl-7-script-executor-free-mac-game-hack PDF link annotation
    • http://tileworld.com.au/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://tileworld.com.au/files/https-iosgodscom-topic-20214coinmasterhack_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/hacked-project-pokemon-roblox_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-unlimited-coins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://tileworld.com.au/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://tileworld.com.au/files/hack-coin-master-app_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_004_off00005206.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5206 23748 bytes
SHA-256: 51135475495b4bf884a73fb62bdf781cd1ff6780bb30bccef6e3f029ca55dc4b
font_01_sfnt_off00008800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8800 19080 bytes
SHA-256: 6c40f591e5bb8ab7a8984c3bec302126e00da5b49e460f6cbf9cc723d0803d57

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