Malicious PDF — malware analysis report

Static analysis result for SHA-256 761d8483a4466613…

MALICIOUS

PDF

36.1 KB Created: 2021-05-19 19:02:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 88f544def903ea07a71fa505dbb224dd SHA-1: 2d20e661299fd44f7d3cdbc7d345bc04bfe2fa67 SHA-256: 761d8483a4466613c0bf22d08b314c9758a3bf533a1d68dec1e7c4396323a73b
170 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'game hacks' and displays a fake CAPTCHA to trick the user into interacting with a malicious link. This link, 'https://netcdn.xyz/app/431946152/how-to-hack-roblox-for-robux-game-hack', is identified as a malicious redirector. The document's structure and content strongly suggest a phishing or social engineering attack aimed at directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0228

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/how-to-hack-roblox-for-robux-game-hack In 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_003_off000031dc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31DC 24996 bytes
SHA-256: d14498b95970d2a2fdd3dd1d03d2f89483fdf96708150a40dcef8e48061f8e08
font_01_sfnt_off00006a62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A62 18648 bytes
SHA-256: 7689b6731d47fc176aef925fc5194a10a34d162e90d7014a3ccea13949bcaf7e