Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e0f9b508bc7030…

MALICIOUS

PDF

40.5 KB Created: 2021-05-10 17:31:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dfb0b631915c20081ef79026c4d134f1 SHA-1: aac3d170540662bedd0c3907a31ebe32358d4dcf SHA-256: e2e0f9b508bc7030159f0595a0bd37a220f0b36eb972faecd917fec013c5b043
92 Risk Score

Malware Insights

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

This PDF document was flagged as malicious. It uses a fake-CAPTCHA lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier clean score 0.0128

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-human-verification-generator-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003526.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3526 25820 bytes
SHA-256: 7a6428030452ce7cad70f8913a65e6f6fef2046f0d80a98a346a72d24138e93b
font_01_sfnt_off00006e5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E5C 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00007b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B04 18860 bytes
SHA-256: d7f1bf4664d5c073c741d68610eb5dcf28a8fd63084b2bf56aee4ef09f8af4a0

Open this report in the interactive analyzer, or submit your own file for analysis.