Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dac84f54ef24c4f…

MALICIOUS

PDF

29.9 KB Created: 2021-07-19 07:18:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a1732bd11b01a303e78e298690597d75 SHA-1: a80c7873334b636a3e9d3e8c5a938668206a42fc SHA-256: 8dac84f54ef24c4f1b2f1885794d977bb5479adb5f568b3b6f19c408a43a2279
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a call-to-action button, directing users to websites that promise free Robux or game hacks. The ML classifier also flagged this PDF as malicious. The document body text and extracted URLs suggest a social engineering lure to trick users into downloading potentially malicious files or visiting compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8523

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/431946152/is-it-possible-to-get-free-robux-game-hack
    • http://118.174.0.244/UserFiles/File/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • http://118.174.0.244/UserFiles/File/coin-master-free-spins-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002184.bin
2975d841ff611f8ca3e2075e20a4435498e2897ee0094d9fcf1a79040492ee97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2184 21944 bytes
font_01_sfnt_off0000523d.bin
629a1f78ecddab60fe069978906664a96ea403a4dd3f143580db508cca550ec9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x523D 18652 bytes

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