Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3766c51ce240b60…

MALICIOUS

PDF

37.9 KB Created: 2021-05-22 06:34:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e9bddcb6a21d61ccab86ea37675b4343 SHA-1: 90efce09c8548afcf180b16d9d370af33395b748 SHA-256: a3766c51ce240b606106018931e5b18687afb80ff12f0ce3add82672875aa776
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs and a prominent call-to-action button, masquerading as a 'free generator' or 'game hack' lure. The primary URL, https://netcdn.xyz/app/479516143/free-games-like-minecraft-game-hack, is identified as a malicious redirector. The document body also contains numerous other suspicious URLs pointing to 'free robux' and 'free spins' content, further reinforcing the phishing and redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/479516143/free-games-like-minecraft-game-hack In PDF document text
    • http://aircraft.by/images/free-roblox-characters_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://aircraft.by/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://aircraft.by/images/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off000034ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34AE 31256 bytes
SHA-256: 66c669c317a23176466625c8aecdbf9fce71eb33e5111dd0ae4bebf37dc8e5f5
font_01_sfnt_off000073eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73EB 17996 bytes
SHA-256: 6316af01e653c53aa8313e9ee065e63d320a9dd1c98e4ac08eccbec55cd1c79a

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