Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d09a6a148f8c7cb…

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 22:46:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a93df70e3826c058774419e3f007852b SHA-1: b6179199c68634a4fdbd1504481bac5243f76bd0 SHA-256: 7d09a6a148f8c7cb656534b35fdeaff7eab832a7cadb53d4e7a4b9be84e738c9
62 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a call-to-action phrase, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests the document is designed to redirect users to download potentially harmful content. The primary lure appears to be offers for free Robux or game cheats.

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/431946152/claimrbx-free-robux-game-hack
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-get-spins-on-coin-master-hack_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-coins_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-spins-5-10-2021_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/can-you-get-minecraft-for-free_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-game_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/roblox-robux-hack-generator_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/minecraft-building-hacks_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-coin-master-spin-daily-link_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-hack-without-human-verification-india_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/minecraft-apk-android-free_GM479516143.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/free-coin-spin-daily-link-net_GM406889139.pdf
    • http://103.30.145.97/__statics/gudangsoal/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004939.bin
ed7c26b03a176280a041cb07cb9f862f5d90a27022b0a24710daa322a825d578
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4939 24472 bytes
font_01_sfnt_off000080e1.bin
cfa2fb642045145230a20b139508f2677ace4dfe3e3be0c8823c50af7163445a
pdf-font-stream PDF embedded font (sfnt) at offset 0x80E1 18696 bytes