Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ec23d329a7152f…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 02:37:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e938a783116f51fa43bf43cda7582771 SHA-1: 92de514e11c3c58ac316e30473d618623dbf6513 SHA-256: 44ec23d329a7152f7892aa6f01e4fba3d630d06f676ec7a90a3425b0a738e948
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document contains a large number of embedded links, many pointing to IP addresses, that are designed to lure users into downloading game-related hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a malicious intent to distribute further content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-mod-apk-game-hack
    • http://202.56.165.220/digilab/repository/earn-free-spins-for-coin-master_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/how-to-hack-and-get-free-robux-2021_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/dark-dominus-roblox-codes-free_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/coin-master-links-for-free-spins_GM406889139.pdf
    • http://202.56.165.220/digilab/repository/codes-how-to-get-free-robux_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-generator-no-survey_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-generator-no-downloading-apps_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/minecraft-for-free-on-phone_GM479516143.pdf
    • http://202.56.165.220/digilab/repository/hack-de-dinero-roblox-jailbreak_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-forks_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-free-robux-codes-2021_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-roblox-promo-codes-no-human-verifycation_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-robux-real-2021_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/promo-codes-for-free-stuff-on-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/how-to-sell-free-shirts-on-roblox_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/blox-pink-robux-free_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-fun-com-free-robux_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/roblox-com-free-robux_GM431946152.pdf
    • http://202.56.165.220/digilab/repository/free-coins-coin-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000030a1.bin
6a3bcd832158f5b7833779a0b43716fc592fa43238d74cff66b83da0a990eb9e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30A1 22828 bytes
font_01_sfnt_off0000639e.bin
4bf67e94d7d6dfdea8b6ca4701ccaf1bd5e348753d7f0670dd6fede0c42c998f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x639E 18352 bytes

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