PDF static analysis report

Static analysis result for SHA-256 4d2a1a83ffd994e8…

SUSPICIOUS

PDF

44.5 KB Created: 2021-06-03 22:03:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c4f5b2f25683a6a86a54eb268617a10d SHA-1: 30d63ba79207dfeca76d6dd673b013581362a6a2 SHA-256: 4d2a1a83ffd994e8597c226d54ffeacf7e8dec66ccd4986a1c18af1096e00f83
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URL and text that directly advertises a 'free Robux' hack, indicating a social engineering lure. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of an external URI and the nature of the lure suggest an attempt to trick users into downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 3

  • 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.online/app/431946152/rbx-free-robux-game-hack PDF link annotation
    • https://www.bridalguide.com/sites/default/files/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/robux-robux_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/pubg-uc-easypaisa_GM1330123889.pdfIn PDF document text
    • https://www.bridalguide.com/sites/default/files/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://www.roblox.coIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000532b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x532B 24796 bytes
SHA-256: 873e63d1cf2d74b771a9e79c17a5ef1f84e902b60117c695c2f3f8183ab55cbe
font_01_sfnt_off00008c03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C03 18012 bytes
SHA-256: 03f7603bc8a5695bbd0c39958af3fcfd5a932cbc13eba7563a8e8ca8b5ca4208