PDF static analysis report

Static analysis result for SHA-256 255fb673d5f43047…

SUSPICIOUS

PDF

50.2 KB Created: 2021-04-30 07:44:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e2795fcf53ccd74b89e4b5fa5dca13a9 SHA-1: a98e68e9f80a8093037c159cea6bee63d6fe7654 SHA-256: 255fb673d5f43047b81f88938a830486246ea0a7422b1a139f91041e09636ced
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free Robux, a virtual currency, and embeds multiple URLs pointing to similar content, suggesting a phishing or scam attempt. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure indicate a likely attempt to trick the user into downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

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.xyz/app/431946152/free-robux-free-and-easy-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/how-do-you-get-free-robux-nisterv.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-xbox-one-free-download.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hacks-roblox-iceboss.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-sensors-entry-point-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/como-hackear-roblox-en-meepcity.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-generator-no-survey-no-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-roam-games-grand-blox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/ccv5-roblox-dbfp-hack-tuto-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-get-free-robux-obby.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-without-downloading-any-games.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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
stream_003_off00004097.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4097 39360 bytes
SHA-256: 02ba5b68482d6786f8aed624849a689f2e543c0d85261194e37aef3434b9360b
font_01_sfnt_off00009516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9516 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000a1bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1BD 18596 bytes
SHA-256: 0e0d0dd22b29210bfd090e1a122891785d585435a75ed4a313059796b5d7d345

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