Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddee2e3098f3b2da…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 19:31:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 07ae975321b74f4e0249273bd197cb42 SHA-1: 983f4f3d0bcd5e0eaf0e6d9c9552e5a5cc15a49a SHA-256: ddee2e3098f3b2da87e6bfacd7f2a97c53444a201e18aef9144f01da65f0073f
170 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating a malicious redirector and a fake CAPTCHA lure, designed to trick users into clicking a link. The primary malicious URL, 'https://netcdn.xyz/app/431946152/free-robux-no-human-verification-no-survey-game-hack', is presented as a 'free generator' or 'game hack' to entice clicks. No scripts were extracted, but the document structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0142

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-no-survey-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000033f0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33F0 31264 bytes
SHA-256: a8bf2afafa07e0d97ecfd9c3cdde20e257fd5c3167c7d835c2ea10579110f53f
font_01_sfnt_off00007c22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C22 2984 bytes
SHA-256: 2df87bbe4e27b27e34c872c092d0522acd977d05f5cbde7ed5e1fdfeb59cb318
font_02_sfnt_off0000866f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866F 19156 bytes
SHA-256: 339d1e55aee7c6169fc9e26e1541ea9d6c779f781f53a8c1d652dbe4fbeac478

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