Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec11d3a254b6e892…

MALICIOUS

PDF

37.4 KB Created: 2021-05-15 14:02:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ae30a7044d1c0117bbe5a78c64263831 SHA-1: 473c349053b61e71dad7734772e0cd573deb52d4 SHA-256: ec11d3a254b6e8924e4afef3f03b23c34ad47bb2e4b416d8c15701a3f811db65
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to a known malicious redirector infrastructure, masquerading as a 'free Robux hack' or 'game hack'. The document body explicitly contains the malicious URL and a call to action to download, indicating a phishing or scam attempt. The presence of embedded URLs and the nature of the lure strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0666

Heuristics 4

  • 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.
  • 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-hack-no-verification-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_off00003347.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3347 26436 bytes
SHA-256: 989cbcd6b0243371d1b6b243c5604742c3a9c5239df8313a2cb72c536cefb6c0
font_01_sfnt_off00006f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F56 18772 bytes
SHA-256: 87cd01898e0c435f6b8e3fdf3db31fb3453f40f32176463e71dafc861d9bd3f7

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