Malicious PDF — malware analysis report

Static analysis result for SHA-256 6def222aab0e71ea…

MALICIOUS

PDF

33.4 KB Created: 2021-07-02 07:51:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 407e07343285f63a8d91a3cd36d4d86d SHA-1: a3c343ff292532fe0f85b70e43e2fc01800a8bd8 SHA-256: 6def222aab0e71ea80428e851b6df73d105561daede6276ee231cd752ff3965e
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains numerous embedded URLs and references to game hacks and cheats for popular games like Roblox and Coin Master. The heuristic 'SE_CALLBACK_LURE' suggests a phishing or scam context, and the ML classifier strongly indicates maliciousness. The primary attack pattern involves luring users to download files via these links, which likely leads to malware execution or further phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.co/app/431946152/hack-mm2-roblox-game-hack PDF link annotation
    • http://www.callong.cn/uploaded_files/userfiles/files/roblox-lynx-hack_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/how-to-get-rs-in-roblox-free-2021-without-hacks_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/roblox-player-apk-free-download_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/is-it-actually-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/how-to-get-free-robux-legit-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/free-account-that-has-robux_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/robux-sites_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/free-roblox-exploits-v3rmillion_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/coin-master-free-spins-hack-2021_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_off00002bb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BB6 22252 bytes
SHA-256: ebaa28befd8117e9b8a3e366f32263051a52688a8640e290c99ab845562a2d17
font_01_sfnt_off00005d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3D 19236 bytes
SHA-256: 8721d16301bee9d77fc1db161d511608b4468a1aee735b67d87e4597a53c7aef

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