Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae39cb9a189e09a9…

MALICIOUS

PDF

40.3 KB Created: 2021-05-21 03:18:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ba5284f8a9de81a8bb3f06756df293f4 SHA-1: d6e5d75748a4f8ffa509f6c3d9a29c12bf967a40 SHA-256: ae39cb9a189e09a9304c9401b8d122662bacba9b826e85174a174878ef2bb4a2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as a 'game hack' or 'free Robux' generator. The document body explicitly mentions 'Roblox Promo Codes Free Robux' and includes a call to action to access a generator. While no scripts were extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7768

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/roblox-promo-codes-free-robux-game-hack In PDF document text
    • http://autismoalbacete.org/images/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://autismoalbacete.org/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://autismoalbacete.org/images/free-apk-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://autismoalbacete.org/images/roblox-avatar-girl_GM431946152.pdfIn PDF document text
    • http://autismoalbacete.org/images/legit-free-spins-coin-master_GM406889139.pdfIn 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
font_00_sfnt_off0000348e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x348E 26192 bytes
SHA-256: 16d1733fb3c63dd12662f49106072ab5d7d50ae2e29487e61ff7927ab29fdb83
font_01_sfnt_off00007176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7176 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00007b38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B38 18676 bytes
SHA-256: 3ed324e585500d41944ebd93500991c566830021fec9c5a8323b790459c3443f

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