Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f00808b72f1a7a…

MALICIOUS

PDF

38.0 KB Created: 2021-05-23 02:08:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: dd749b29c3274684c7ba76d8fdbff167 SHA-1: 52d73aa9065a8a6d6d329c18de0f1739e5a3249c SHA-256: 30f00808b72f1a7a621ce36930adf5e830e8a3e28c6af8542055c9ddc4d029da
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a fake CAPTCHA lure, aiming to trick the user into clicking a link. This link, 'https://netcdn.xyz/app/431946152/free-robux-codes-generator-game-hack', likely leads to a malicious website or download. The presence of multiple PDF-related heuristics and embedded URLs suggests a common phishing or malware distribution tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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-codes-generator-game-hack
    • https://newenglandafs.com/images/coin-master-hack-spin-ios_GM406889139.pdf
    • https://newenglandafs.com/images/is-pokemon-go-free-to-play_GM1094591345.pdf
    • https://newenglandafs.com/images/minecraft-java-for-free_GM479516143.pdf
    • https://newenglandafs.com/images/roblox-piano-hack_GM431946152.pdf
    • https://newenglandafs.com/images/how-to-hack-roblox-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003482.bin
3a837c116795f918169a2fd945e3794adf9dbfcfbc3d98e5e85c5bb4c53d1fdb		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3482 26728 bytes
font_01_sfnt_off00007293.bin
1c25fc10cbc7d9d0374bcdf27ae43ed9c15c29ea4d1fc113120e8f54655ee57b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7293 18520 bytes

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