Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f271dba71753ad…

MALICIOUS

PDF

36.2 KB Created: 2021-05-24 16:23:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d81c2050bebd2e4ea30339457f61a01b SHA-1: 14e8894123d3f5ad1c007a59b68b6776128c79d2 SHA-256: 68f271dba71753adacf8104af18eeca114af9176616057bdae415d2719b8c2c3
82 Risk Score

Malware Insights

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

The PDF contains embedded links and a call-to-action phrase, directing the user to external URLs that are likely malicious. The 'SE_CLICKFIX' heuristic indicates the document is designed to trick users into running commands, further supporting a social engineering attack pattern. The ML classifier also flagged the PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/free-minecraft-worlds-game-hack
    • http://cmfd.nl/images/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • http://cmfd.nl/images/roblox-free-clothes-generator_GM431946152.pdf
    • http://cmfd.nl/images/coin-master-free-spins-link-facebook-page_GM406889139.pdf
    • http://cmfd.nl/images/coin-master-hack-spins_GM406889139.pdf
    • http://cmfd.nl/images/robux-free-promo-codes_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032b5.bin
c21638f0e00314e31db8896c6c70857c231d60076a2000c7302b7b1fe3f870e5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32B5 25408 bytes
font_01_sfnt_off00006c9a.bin
664c7195a075aff6dcec565529a8f8eee0b73719923e2c76767f815b88d63ca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9A 18156 bytes

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