Malicious PDF — malware analysis report

Static analysis result for SHA-256 72011c9c3a1d99e3…

MALICIOUS

PDF

38.3 KB Created: 2021-05-23 01:36:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: aa63fd31d33890cca6b212be22988b18 SHA-1: ba955bba20a180b70b2d91c1214c92c0e3c72f91 SHA-256: 72011c9c3a1d99e3844fc7544ce3b2595696e2bc98e199122308abd0f11b0bd0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a fake CAPTCHA lure to trick users into clicking a link for a "free Robux generator". The document body and embedded URLs point to malicious domains that likely host further malicious content or phishing pages. No scripts were extracted from this sample, but the presence of a fake CAPTCHA and malicious URLs strongly suggests a phishing or scam attempt.

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/how-to-get-free-robux-without-verification-2021-game-hack PDF link annotation
    • http://condit-pack.com/images/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://condit-pack.com/images/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • http://condit-pack.com/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://condit-pack.com/images/coin-master-game_GM406889139.pdfIn PDF document text
    • http://condit-pack.com/images/free-spins-coin-master-cheats_GM406889139.pdfIn 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_002_off000033f3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33F3 27532 bytes
SHA-256: 202f511fe01b4322e330c6fbfc4f86a5cd7ea0bcd3bc6c0a81e7846634f7803c
font_01_sfnt_off000070d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70D9 19528 bytes
SHA-256: 1b346556c7df455cb9a54b8f1a6e3f1a0bfffa2d9228fa0640c35d2bdb9db684

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