Malicious PDF — malware analysis report

Static analysis result for SHA-256 37b4ecc08a65474d…

MALICIOUS

PDF

41.2 KB Created: 2021-05-12 09:30:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: df1f7e19db06e23751dfca3978656b8e SHA-1: 8194c6b8eeb1e14739724d849012dafe7751143f SHA-256: 37b4ecc08a65474d052dde99ba59dd317bc8310f6d2ede9bc8cf96c431f729d5
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency ('Robux Hack') and embeds a link to a known malicious redirector. This suggests the document is designed to lead the user to a malicious website, likely for further exploitation or credential harvesting. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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/how-to-get-free-robux-hack-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_off000032dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DD 27844 bytes
SHA-256: f81cb3c9b05d748328a445f4f113df6785490e3de73b0fa5967e0ae8e8d0119a
font_01_sfnt_off000072b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72B8 3512 bytes
SHA-256: d2fbe445e4228ea2e3d75d3e8f0f84124f9dd8d3d0cf2c6e4e63bcca92f2519f
font_02_sfnt_off00007e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4B 18680 bytes
SHA-256: 94830d128a2a842b7d907871b5b30233810e9b8beb569ce3f786f2ddb63eaed4

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