Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba4613cdd54b10f0…

MALICIOUS

PDF

41.5 KB Created: 2021-05-19 00:38:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c1c96b3b132675408d0bc415e1b5a05b SHA-1: 251012a2a4cb61af377336a9cf906857e01bc8e2 SHA-256: ba4613cdd54b10f0f4f3bbe2e036a6535a102f6a45b36633fd148cc17dc7bb32
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically advertising a 'free Robux generator' or 'game hack'. The document body and heuristics indicate a lure to a malicious website. No scripts were extracted, but the primary malicious action is the redirection via the embedded URL.

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/free-robux-live-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_off00003836.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3836 27116 bytes
SHA-256: 07f941359d11e0807bdfced7f63b7d469b8ef167d38fa9ff7b3a7fa096b612d8
font_01_sfnt_off00007737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7737 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000080e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E8 18248 bytes
SHA-256: 2e5a72f8344bcf9b425e9fd022f0a9c5c2029812f1a4b00ba9f2a8ee504eb572

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