Malicious PDF — malware analysis report

Static analysis result for SHA-256 683fd87282a3e247…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 05:10:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6040d13d3513190cc4810d5c37d96705 SHA-1: 79bb7dde1fb3c89eab8ecc9328dfcc590b092331 SHA-256: 683fd87282a3e2477621fd95a036a27581d28abbd44cd96a3e4f89f4cb393883
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free Roblox items and includes an external URI pointing to a download. The presence of a callback lure suggests a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/free-roblox-hair-to-wear-game-hack
    • https://www.ashkarco.com/uploaded_files/userfiles/files/robux-for-offers_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-free-hair-boy_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coinmaster-spin-ml_GM406889139.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-com-free-play_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/is-minecraft-java-free_GM479516143.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-free-spin-and-coin_GM406889139.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-free-snacks-link_GM406889139.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/free-robux-real-working_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-code_GM406889139.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-cards-hack-2021_GM406889139.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/what-do-roblox-points-do_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/minecraft-java-account-free_GM479516143.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/robux-fun-hack_GM431946152.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-game-hack-app_GM406889139.pdf
    • https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • https://robuxhaxs.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fe0.bin
2e0492c0db5e2ee3dbe2b230680e226f3afb5091ba334b54d98fd7a32768df28		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FE0 27060 bytes
font_01_sfnt_off00008d0e.bin
adf075a740c6f928a3b94d4aeef99adcd15710aa40e26859f6513b600edf11fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0E 18496 bytes

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