PDF static analysis report

Static analysis result for SHA-256 5a313c51bc6f3219…

SUSPICIOUS

PDF

42.5 KB Created: 2021-06-11 04:23:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 56f2555d39df421e0ef22e1e6dc5ee8e SHA-1: 71e75f30640ff4dab86f4b344a3bb3c7ec5d0af4 SHA-256: 5a313c51bc6f321969347b8ac4c7675f38f51148deafec9e6dd47636823feeaa
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to obtaining free items in Roblox, directing the user to a suspicious URL. The presence of a 'password-protected archive lure' heuristic suggests that the linked content might be an encrypted payload. While no scripts were directly extracted, the PDF structure and embedded URL indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0285

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.tw/app/431946152/how-to-get-free-hats-on-roblox-2021-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C6F 25540 bytes
SHA-256: bebb56955fb169e61f2c8aa1b7c9cd5c24685673e08078f3b230fcbd4adce582
font_01_sfnt_off000075fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75FE 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000082a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A6 18844 bytes
SHA-256: 6db98c1a583a4938941b5288b530b15dae44c9b4482509847e9aafc39b201cb1

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