Malicious PDF — malware analysis report

Static analysis result for SHA-256 005b6f9a4cf9e6d8…

MALICIOUS

PDF

35.5 KB Created: 2021-05-21 00:24:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0736b7dfc1b037a2115a0479a5f3b942 SHA-1: b1d6698ce279bb5e9c6a87919e6459d760aa7bd1 SHA-256: 005b6f9a4cf9e6d897a0c1ab00ddac8ed26f75cfdb7915ac0bfe9bfa31f7ad55
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document displays a fake CAPTCHA and a lure for a 'Robux Hack' to deceive users into clicking a malicious link. This link, 'https://netcdn.xyz/app/431946152/robux-hack-free-robux-game-hack', is associated with known malicious redirector infrastructure. The document's content and heuristics suggest an attempt to trick the user into executing further malicious actions, likely involving the download of a second-stage payload.

Machine Learning

  • Nyx PDF Classifier clean score 0.0718

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/robux-hack-free-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_002_off00002fea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FEA 24960 bytes
SHA-256: 5427da3e61595ffa38cd39c0ba4e5c7b99bff5e68cf709141c3152af61c068a8
font_01_sfnt_off0000697d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697D 18412 bytes
SHA-256: e7ad190f023b5a59f82d5d2304e728b1fb84096fbbeb22520bbc212286f43b51

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