Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bdd2253560518fb…

MALICIOUS

PDF

37.2 KB Created: 2021-05-24 21:17:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 327e6e5ec3622cf8f38c2adff4418d7b SHA-1: 12b71b97cba8bf62e0437cfbdd1bc0208af63448 SHA-256: 7bdd2253560518fb990dbe100823fbf1b9861f2ea9ec570eab189eb634b8aa1f
82 Risk Score

Malware Insights

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

The document presents itself as a 'Robux Generator' and contains a fake CAPTCHA or human verification prompt to trick the user into clicking a malicious link. The embedded URLs and document body text strongly suggest a phishing attempt to redirect users to scam websites. No scripts were extracted, but the presence of external URIs and the fake CAPTCHA heuristic indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/get-free-robux-generator-game-hack PDF link annotation
    • https://www.imagevideo.info/images/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-daily-bonus_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • https://www.nrzroblox.comIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003451.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3451 25692 bytes
SHA-256: edf74062e632e423e7509558e1c1fdd860d6b77fdca91f72ca1473d42166f102
font_01_sfnt_off00007013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7013 18344 bytes
SHA-256: 3242c4573a8204327cdf084b118e3b23cfd789fa9551ab2d205e53ac9add3c4b

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