Malicious PDF — malware analysis report

Static analysis result for SHA-256 a80878f5498c2f58…

MALICIOUS

PDF

28.5 KB Created: 2021-06-30 03:03:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bf566880db40c6cd7019484a5b025c75 SHA-1: af8b755efcc133f7c826d95a1b5371b5a4883c7d SHA-256: a80878f5498c2f5865fd0da00b382855310dd7108b05702d32c95ed9647812b4
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure for a "free generator / game hack" which links to known malicious redirector infrastructure. The embedded URL is designed to trick users into believing they are accessing a legitimate service, but it ultimately leads to malicious content. No scripts were extracted from this sample, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier clean score 0.0330

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 http://netcdn.co/app/431946152/how-to-get-free-robux-without-password-2021-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1745 22076 bytes
SHA-256: 66e3791955b70d420081a888afa3fce49d5d87564cb1feedebe3874538a8c139
font_01_sfnt_off00004867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4867 20200 bytes
SHA-256: 12a412670553a3e2c4b6cc223e33571d275cc4abcd776faf5551cf86f5b88efb

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