Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba8634915cde1346…

MALICIOUS

PDF

43.6 KB Created: 2021-05-15 12:00:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4f52fd9d55f5c50285ac4d6a2098e0b1 SHA-1: 6b2d722e3065b02f9fdca6bfb2213a4351733c98 SHA-256: ba8634915cde134673e09acf17c192ecab1b4c88f08bcb53fccf44889490684e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating a malicious redirector link, specifically a lure for a 'free generator / game hack'. The embedded URL 'https://netcdn.xyz/app/431946152/how-to-get-free-robux-hack-game-hack' is identified as a known malicious redirector. The document body also contains text and a call-to-action phrase related to obtaining free Robux, reinforcing the lure. Although no scripts were explicitly extracted, the nature of the PDF and its embedded links strongly suggests an attempt to redirect users to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0142

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_off000032df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DF 33068 bytes
SHA-256: 5730d659677924509a6ed587e5421692e9a431b71b4da5205bf0f6316ab3e28a
font_01_sfnt_off00007b6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6F 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8816 18680 bytes
SHA-256: 94830d128a2a842b7d907871b5b30233810e9b8beb569ce3f786f2ddb63eaed4

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