Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d5a3e6ce90dbaff…

MALICIOUS

PDF

46.6 KB Created: 2021-06-02 00:40:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f8925af4a7dbdafad9886ce229785b3c SHA-1: 8b59f071987b3cea1183ea565cadfcceaa120b6b SHA-256: 4d5a3e6ce90dbaffbf4d41d8a1b8fee9c96c71307bd1ab69d0a304cf3020c747
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free generators' to entice users into clicking malicious links. The primary URL, https://netcdn.xyz/app/431946152/roblox-account-hack-download-free-game-hack, is directly linked to the lure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious intent to redirect users to potentially harmful content or phishing sites, aligning with T1566.001 (Spearphishing Attachment) as the likely initial access vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/roblox-account-hack-download-free-game-hack PDF link annotation
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/good-outfit-ideas-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/robux-hack-real-2021_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/free-robux-generator-no-verfyication_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/bloxburg-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-wallhack-cheat-engine_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-hack-v2-1_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/how-to-download-nonsense-diamond-hack-roblox_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/how-do-you-get-robux-unlimited-free_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-boat-free_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/click-delete-hack-roblox_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/robloxcom-cheat-codes_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/how-do-you-gift-people-robux-for-free_GM431946152.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://mdesigns.sa/wp-content/uploads/fsqm-files/roblox-free-robux-generator_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_004_off00005208.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5208 27312 bytes
SHA-256: 8625abb829a46398414f439d580ace3db2ee712cc4af292e7b1ee74d17cf96da
font_01_sfnt_off0000912e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912E 19096 bytes
SHA-256: 45d15e4ea22eceb4497dfa7d72ce08b9dfb406806be9b2dd9cc63890ee6d5885

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