Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a68fc6526c624b…

MALICIOUS

PDF

31.4 KB Created: 2021-07-21 02:27:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 41fcc4f0f6f427c60433ff71e9318e46 SHA-1: f5793294d19ee1f96a9634ff2204ca016671fdc0 SHA-256: 67a68fc6526c624b404e4d2038e0ed3fe6c84dad4fafeb2a6651ebe1bce04e39
82 Risk Score

Malware Insights

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

This PDF document employs a lure related to game hacks and free in-game currency to entice users to click on embedded links. The primary link, http://netcdn.tw/app/431946152/how-to-hack-people-on-roblox-game-hack, and numerous others hosted on hilro.co.za, likely lead to malicious websites designed for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest an attempt to exploit user interest in obtaining cheats or virtual items.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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/how-to-hack-people-on-roblox-game-hack PDF link annotation
    • http://hilro.co.za/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://hilro.co.za/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://hilro.co.za/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://hilro.co.za/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://hilro.co.za/images/free-minecraft-skins_GM479516143.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_off00002754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2754 21596 bytes
SHA-256: 695278b41b2e426a51045688b1a4c7525052cc379016005718a9566d6387e6b4
font_01_sfnt_off000056c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56C1 18864 bytes
SHA-256: 3bb8a2dae3a1b4d991366e88f95c9aba70b3d869c0580506886643149285b4b1

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