Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60a5f64f10de614…

MALICIOUS

PDF

35.3 KB Created: 2021-07-10 01:00:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a7146bb982eece810fd8c4ff9cde7f51 SHA-1: 960ab1c867d8a26a029410b3131679482bf243a9 SHA-256: b60a5f64f10de614b0347827655414d2348fc8d5af4bdc23d37920be160d482d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/roblox-speed-hack-game-hack PDF link annotation
    • https://www.maximabm.com/uploaded_files/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/roblox-earn-robux_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/roblox-lua-script-gear-giver-hack_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/ooby-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-way-2021_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/hacking-codes-roblox_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/earn-robux-online_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/change-clothes-by-id-roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/how-to-hack-roblox-jailbreak-with_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.maximabm.com/uploaded_files/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • https://maximabm.com/uploaded_files/userfiles/files/robux-free-roblox-2021_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_002_off000031ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31ED 22824 bytes
SHA-256: b4551d669e0b3e91fcfd5582388f5636d22e931d77ff42fdef11a437f8b20d36
font_01_sfnt_off000064f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F1 19008 bytes
SHA-256: 0d35cfadd0fca3b252b73fcf83046c0556c80fc1b3ae89449d52291489f63b0a

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