Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0685a692bf406c…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 18:32:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c48c9084f4945700308f3aaf500ce2ee SHA-1: dffd4f9d2ee9c27b240c3152aabeebcc3e06fbfb SHA-256: fd0685a692bf406cd5fcc9c85b1cc1c196e0a300ce422280648dff8a6c520ed6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. This is a common social engineering tactic to trick users into visiting potentially malicious sites. The ML classifier also strongly indicated maliciousness.

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/how-to-get-free-robux-without-offers-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/hacking-pokemon-reborn-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-robux-free-quik_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-item-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-items-on-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/www-roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-on-roblox-mac_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/op-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-hack-no-human-verification-2021-ipad_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-tix-and-robux-game_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/easy-basic-hacking-engine-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-cool-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hack-script-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-download-hack_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
font_00_sfnt_off0000315c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x315C 22824 bytes
SHA-256: 7a5f7e3b500ddfd29d9747c0fe8484a14637e55e15e406c399cbc381ed5b9ee8
font_01_sfnt_off00006497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6497 19468 bytes
SHA-256: d293dc8b17a4ec261e56b386a82f7f63f23481516d807023c0ef4741d16fdc92

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