Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b56f4c0d336f720…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 03:54:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 84f47a03b6f69842211e887727d6a8ab SHA-1: 85edecc1733cec62201451f60b53e61726292997 SHA-256: 4b56f4c0d336f720778ccdcf6bf18e7362d8eb3b1cad5f0b33a00dd4304656a6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs and a document body that explicitly advertises "hacks" and "free items" for popular games, indicating a social engineering lure. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs, including one pointing to a raw IP address, suggests it is designed to redirect users to malicious content or download further payloads. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/coin-master-100-spin-hack-game-hack PDF link annotation
    • http://36.94.36.7/elib/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfPDF link annotation
    • http://36.94.36.7/elib//repository/robux-offers_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/roblox-prison-life-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-items-for-google-play-roblox_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib//repository/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://36.94.36.7/elib/repository/roblox36com-free-robux_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_off00003115.bin
8e77414e1eb202a007401bae769dbb1c520b1850c2ebf683bff4840983a73fe1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3115 22888 bytes
font_01_sfnt_off0000643c.bin
5764fe489fad824b29cec145f8144c68a28ee0900426709e5c8c298cb29caefa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x643C 18460 bytes

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