Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dcd1d4a5418ba3d…

MALICIOUS

PDF

38.8 KB Created: 2021-05-21 23:37:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f1ef2346338d123641afaa28ab327c24 SHA-1: 205321d832214e470fdb4a3a35cf54af5686bafd SHA-256: 2dcd1d4a5418ba3d5a38133bf20d950b795bbe745faf653d0f9ba988872b8fa9
82 Risk Score

Malware Insights

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

The PDF document contains text and embedded URLs related to "Free Robux" generators, a common lure for phishing and malware distribution. The presence of a fake CAPTCHA heuristic further supports the intent to trick users into performing an action. The primary external URI points to a suspicious domain, likely serving as a landing page for the scam or a download source.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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-no-verify-game-hack PDF link annotation
    • http://precitool.ch/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://precitool.ch/images/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://precitool.ch/images/free-coins-coin-master-2021_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_off00002e73.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E73 30032 bytes
SHA-256: be6263a2f9f52f0f7f3ca1b56f7281dc230b25b74b9b802bb23cb1029673f608
font_01_sfnt_off0000762f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762F 18448 bytes
SHA-256: c82a2e535d1b02ce633786be567827726fc21df48f71ae9cb05a1d9866072f5e