Malicious PDF — malware analysis report

Static analysis result for SHA-256 7645da5e67758c3a…

MALICIOUS

PDF

42.2 KB Created: 2021-05-17 20:02:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5d570e8df25b4c82395def05b571704e SHA-1: e1b0815405e0d166bba82e7c27bce6504b731a71 SHA-256: 7645da5e67758c3af69d0459db1eb6d8c538bc3875bb4f1780c5ab4ecb414f7b
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are related to game hacks and cheats for popular games like Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and callback lures suggests a phishing or scam attempt. The document's primary purpose appears to be directing users to download potentially harmful content or engage in fraudulent schemes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/roblox-avatar-tester-game-hack
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/robux-free-co_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-hack-2021-free_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/ways-to-get-free-robux_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-websites-2021_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/roblox-a_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-not-fake_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/minecraft-cheats-pc-2021_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/roblox-hackers-list_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/minecraft-windows-10-edition-free-download_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-official-website_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-free-spins-cash_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/robuxmatch-com-free-robux_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/oprewards-com-roblox_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/games-to-get-free-robux_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/roblox-apocalypse-rising-hack_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-hack-unlimited-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004969.bin
83ed6687f152f74cfba82e167ea6eda32b92b2ca45d623d484a13d9debf9272e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4969 24688 bytes
font_01_sfnt_off00008273.bin
202894cb6a5bec519cb1aff7aa26487a29ece32a0cf0ce5d4249a64a0c567dc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8273 18228 bytes

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