PDF static analysis report

Static analysis result for SHA-256 536564ca78eb2b3f…

SUSPICIOUS

PDF

44.5 KB Created: 2021-04-28 11:05:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 07709933ec9c0829ed90c6704ec01e47 SHA-1: 52e6a8c69c802bcf8c61a0669b8922eb61a01be0 SHA-256: 536564ca78eb2b3f5250f3be5509fe9f7f66d014d03d2932d1f32008aab4bfb0
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous URLs and text fragments related to 'free Robux' and 'hacks' for the game Roblox, indicating a social engineering lure. The presence of an external URI pointing to a suspicious domain, coupled with a high-confidence ML classifier flagging the PDF as malicious, strongly suggests it is designed to trick users into downloading malware. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious download attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

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/counter-blox-roblox-offensive-hacks-2021-how-to-get-money-game-hack PDF link annotation
    • http://www.saburai.ac.id/elibrary//repository/claim-free-robux-roblox-rewards.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/daily-free-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-com-toys-free-codes.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-free-yourself-in-notorious-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-mods-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-robux-hack-on-phone-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-5-bil-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-roblox-group-payouts.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-email-reset-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-pins-for-roblox.pdfIn PDF document text
    • https://freerobux.cyouIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004178.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4178 26088 bytes
SHA-256: d2ea6969cf595fec29d64478f8ff8328a0e32e8a0a96932f3b087274268848e4
font_01_sfnt_off00007c96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C96 3312 bytes
SHA-256: 40bd8eebcb3a0d68a8646f1930e84f30a44bfa48525263c6c528f0bc1e9c1677
font_02_sfnt_off000087e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87E6 19604 bytes
SHA-256: 314afa65a46e0ea57c1f7660085522d30c74e79a6f593949240b725ca5ae1822

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