Malicious PDF — malware analysis report

Static analysis result for SHA-256 26eaf5e960f43699…

MALICIOUS

PDF

48.8 KB Created: 2021-05-22 02:37:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0075a21c0aeb5705fa83dd2f33ba4c29 SHA-1: 623bf125d65de9f8bd59b1c34f30d0ed728080ec SHA-256: 26eaf5e960f4369950f8bfcb345058bcc11c01d867a4e9fa2d4184686058784a
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a prominent call-to-action to download a 'Minecraft hack'. The ML classifier and heuristics for external URIs and download button lures indicate malicious intent. The document body and embedded links suggest a phishing attempt to trick users into downloading potentially malicious files disguised as game cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8454

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/how-to-download-minecraft-for-free-game-hack PDF link annotation
    • http://bau-lk.de/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://bau-lk.de/images/coin-master-level-3_GM406889139.pdfIn PDF document text
    • http://bau-lk.de/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://bau-lk.de/images/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://bau-lk.de/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003462.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3462 29140 bytes
SHA-256: 58d5151d4fad740d13ea82cd2d33f45d8114388aa1f43cf6283d3ac25626fe0b
font_01_sfnt_off0000761e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761E 7936 bytes
SHA-256: 218d53b68bdddb064f6fba4be822d5b3725ed1cef1a3b42796a8dd99c4a62f4e
font_02_sfnt_off00008f47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F47 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off00009dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD3 18292 bytes
SHA-256: 99621570461cd7d06d3aeee2d5a7201c5e27378a0102ff29a57c60fd25da4758

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