Malicious PDF — malware analysis report

Static analysis result for SHA-256 3698b2a6233fd0fb…

MALICIOUS

PDF

37.7 KB Created: 2021-05-21 02:20:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 975883600c16c2a2f257d50c4bf9539b SHA-1: e7db818c5e04c055d9a0f7265518ef500d571e0b SHA-256: 3698b2a6233fd0fb72539bcdea021d83ba507165c9990e5f6c841e203114258f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent call-to-action to access a 'Roblox Generator' or 'free Robux'. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent. The document likely serves as a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-not-fake-game-hack In PDF document text
    • http://autismoalbacete.org/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://autismoalbacete.org/images/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://autismoalbacete.org/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://autismoalbacete.org/images/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://autismoalbacete.org/images/robux-hack-generator_GM431946152.pdfIn 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_002_off00003419.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3419 28564 bytes
SHA-256: d28465966996f00e085b94522610053a9db5b9986e45175615653300660589f7
font_01_sfnt_off00007189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7189 18516 bytes
SHA-256: ca79d80576681ece98af22104654f282f19bfdcccdd95bbb76316d29f9029162

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