Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc41515f2753025e…

MALICIOUS

PDF

42.3 KB Created: 2021-05-14 13:44:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b17821449c5f9ee979c502302b44c02f SHA-1: fdc493be368e6175261762ed7a227221f916096a SHA-256: cc41515f2753025e22e247291fb6c8c981da57559af41eae358ef6e4979508ae
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and a document body that strongly suggests a lure for downloading game cheats or hacks, such as 'Wurst Client'. The presence of multiple URLs pointing to IP addresses and domains associated with such content, combined with the ML classifier flagging it as malicious, indicates a high likelihood of this being a malicious document. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/479516143/wurst-client-1.8-9-game-hack
    • http://45.115.65.99/__statics/gudangsoal/files/free-limiteds-roblox_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/coin-master-hack-apk_GM406889139.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/claim-free-robux-button_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/free-spins-on-coin-master-generator_GM406889139.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/free-2021-robux_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/roblox-jailbreak-hack-download_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/coin-master-free-spins-link-today_GM406889139.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/como-descargar-coin-master-hackeado_GM406889139.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/free-robux-android_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/coin-master-spin-ml_GM406889139.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/roblox-land-free-robux_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/free-roblox-money_GM431946152.pdf
    • http://45.115.65.99/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049c5.bin
4c8bc04bcc2d3791368573ae69039f813e6bb445244a67e5c27284dfb711070e
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C5 25140 bytes
font_01_sfnt_off00008304.bin
4d8ada0c5ac659fb49370babfb0317bee460cb2310b474ce078588896e89c849
pdf-font-stream PDF embedded font (sfnt) at offset 0x8304 18296 bytes