Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c41c2d7d941247…

MALICIOUS

PDF

37.6 KB Created: 2021-05-23 00:42:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a08c941d4c2402f1269ccc054ade2798 SHA-1: df2f590829386966d153990ced7363fb02e09720 SHA-256: e9c41c2d7d94124772f618b0b0f93c40be7b83f19d4e341c1f8c18d80e895190
82 Risk Score

Malware Insights

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

The PDF document contains a prominent link disguised as a game download, which is a common social engineering lure. The 'SE_CLICKFIX' heuristic indicates the document likely instructs the user to execute a command or open a link, further supporting the malicious intent. The presence of multiple suspicious URLs suggests a campaign distributing potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/minecraft-online-free-download-game-hack
    • https://na.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-event-hack_GM406889139.pdf
    • https://na.itk.ac.id/asset/backend/upload/ckeditor/files/is-free-robux-real_GM431946152.pdf
    • https://na.itk.ac.id/asset/backend/upload/ckeditor/files/get-2021-free-spins-on-coin-master_GM406889139.pdf
    • https://na.itk.ac.id/asset/backend/upload/ckeditor/files/www-coin-master-hack-tk_GM406889139.pdf
    • https://na.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-real_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000384d.bin
6a5b1282db1b940d02bc0f9b18e50c8998cf17d498991c5c315611c9f76547bf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x384D 25244 bytes
font_01_sfnt_off000071ad.bin
a2a63f8c18687518d260bdaa10b8e62a526b9456f69b3d2706eff3b892369b89		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71AD 18292 bytes

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