Malicious PDF — malware analysis report

Static analysis result for SHA-256 c77d7765d0c6b8f0…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 15:04:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3d924f26023fd50576964403520feead SHA-1: 0159781d08082d33ffefd3141b5cf06d40d378cf SHA-256: c77d7765d0c6b8f02cfa063a211d9c242a650cf86e8e1e1c123de88b1486754b
62 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a document body that promotes 'hacks' and 'free items' for popular games, indicating a phishing or scam attempt. The presence of external URIs and a clickable URI pointing to a raw IP address suggests the document is designed to redirect users to malicious sites for downloading further payloads or engaging in fraudulent activities. The ML classifier also strongly flagged this PDF as malicious.

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-hack-no-human-verification-2021-game-hack
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-2021_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/you-promised-my-son-free-robux_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/claim-roblox_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/coinmaster-spins_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/free-robux-codes-generator_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/roblox-verification_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/coin-master-free-redeem-code_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/daily-coin-master-free-spin-apk_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/free-coins-on-coin-master_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • http://110.232.83.89/slimsppks/repository/free-spins-coin-master-links-2021_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/coin-master-free-coins-amp_GM406889139.pdf
    • http://110.232.83.89/slimsppks/repository/minecraft-java-free-trial_GM479516143.pdf
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-iphone-5_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/free-roblox-card-codes_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-com_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/roblox-hack-engine-download_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdf
    • http://110.232.83.89/slimsppks/repository/give-me-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003267.bin
af5c989d2cef26cba751965eff87842ea4c9ed166eed4bef1e2826e7906f0674
pdf-font-stream PDF embedded font (sfnt) at offset 0x3267 23008 bytes
font_01_sfnt_off00006605.bin
a7529eedff3e399852376b8c12ef87d60bbe4ae3f7bf708f76a8d47e7c034202
pdf-font-stream PDF embedded font (sfnt) at offset 0x6605 18940 bytes