Malicious PDF — malware analysis report

Static analysis result for SHA-256 225730f7c6c9765d…

MALICIOUS

PDF

36.5 KB Created: 2021-05-22 04:05:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 993ddd741d2d6a7345b437aa35d200a6 SHA-1: 5565d5fdc83d4e92145bc5ba1a4a080d06cdf72d SHA-256: 225730f7c6c9765dff29ef7c799e87ce61f6c329e65fc1f364eb565d66b35345
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links and document body text that explicitly mention 'free Robux' and 'game hack', indicating a lure for virtual currency. The presence of a high-severity ML classifier firing and multiple external URLs, including one directly related to the 'free Robux' lure, strongly suggests a malicious intent. The document also contains a heuristic indicating it might be used to trick users into believing they need to provide a password for an archive, a common tactic to bypass security filters.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/431946152/how-to-get-free-robux-without-human-verification-game-hack PDF link annotation
    • http://elearningaluswah.com/__statics/gudangsoal/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://elearningaluswah.com/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://elearningaluswah.com/__statics/gudangsoal/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://elearningaluswah.com/__statics/gudangsoal/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningaluswah.com/__statics/gudangsoal/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FE 24136 bytes
SHA-256: 2dc7fb8e04f903f6197ab9cc0dd25f71df049a56505cd363abf30d87d9d73f31
font_01_sfnt_off00006a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2B 19388 bytes
SHA-256: c7994a70f951e7a274445218605a0e5dad46067da7d3a89c75279f94e76bcfde

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