Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec70228387ec70b…

MALICIOUS

PDF

39.5 KB Created: 2021-05-23 14:19:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e62df9f72ff5f6cd3ec8409b12e38cb1 SHA-1: dacdc8d11b89ad9b5e175df8de09b52492cdefd6 SHA-256: 7ec70228387ec70be9147e567f75d4e29156a5e86598622d2453e419fb2e1ad7
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a clear lure related to hacking Roblox accounts, directing users to a URL associated with known malicious redirector infrastructure. The presence of a 'download button' heuristic further supports the intent to trick the user into interacting with the malicious link. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier clean score 0.0134

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/how-to-hack-someone In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E04 25092 bytes
SHA-256: e53db3cdc42ea4076da4b6b7a668ce78467f6d33fe8b5900f8e0e26801b84344
font_01_sfnt_off0000674b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674B 4760 bytes
SHA-256: 42a3804442c6cda23f3e875ee01b0b0498df455bd40e6092409b0547e1cb4c74
font_02_sfnt_off0000770f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770F 18912 bytes
SHA-256: 995056b981027bfba3f97be2499ebace8b386febdb07856c531761fbe005e83e

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