Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd61663d424192d6…

MALICIOUS

PDF

37.7 KB Created: 2021-05-12 09:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a236d635f96d1ff75da2193e98eebd6c SHA-1: 5fc00d6e6143bbdfc1bee26329486e97e7e4f7e9 SHA-256: cd61663d424192d62e5240129ae40d666c57840b97b0918aefcf59eeb0705941
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a malicious URL disguised as a game hack generator. The document body also contains phrases like 'CLICK HERE TO ACCESS ROBLOX GENERATOR', indicating a social engineering lure. The presence of multiple redirector links and the nature of the lure suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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-hack-roblox-to-get-robux-game-hack In 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_003_off00003145.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3145 28120 bytes
SHA-256: eb4eb99afc9c9959d7a848151e0d11a9a41560b00b0279a1aa735defcd40da01
font_01_sfnt_off00007117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7117 18588 bytes
SHA-256: 6723e17a0e3ea7e17da9fa5ee91cb22fe0fa4706a6f3d09ae44dda015c08872b

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