Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ed580aa0817c63e…

MALICIOUS

PDF

36.4 KB Created: 2021-05-20 02:12:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6fd41fa20e1a5263ecf8229d77dd9e8a SHA-1: 7290403ac6d74b4dfc0f50765929f70a0117ccf2 SHA-256: 4ed580aa0817c63eea0af845450c143521260a9d81d7a0388d5381b4a1f81a6e
170 Risk Score

Malware Insights

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

The PDF document contains a malicious link disguised as a game hack generator, which is a common lure for phishing or malware delivery. The link redirects to a page that presents a fake CAPTCHA or human verification prompt, likely to trick the user into executing further malicious actions or downloading a payload. The presence of embedded URLs and the nature of the heuristics strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier clean score 0.0312

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/google-roblox-games-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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
stream_003_off00003081.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3081 25500 bytes
SHA-256: 8ea22f2c7f5b5b764c17b211874691ee18b178f463bea9c19bf108981010efd7
font_01_sfnt_off00006c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C12 18560 bytes
SHA-256: 0fb1d19a9ce31739a953e5696a177f7c2cbb3bd8fcc5147d812294bb20adc511

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