Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc1e52e73f8298af…

MALICIOUS

PDF

31.6 KB Created: 2021-05-23 00:18:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ca3e44af184dcc377aac73835d2da53 SHA-1: 2292273af41d9fb874a0fd6bdda5ec6b9dea0c34 SHA-256: bc1e52e73f8298af5cd9d24bc42ea8a0a9b3a3c94e6e832704935c8e6a617a59
152 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector domains, specifically advertising 'free generators' and 'game hacks' for popular games. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further malicious content or exploit delivery, aligning with a phishing or social engineering attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9785

Heuristics 3

  • 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.
  • 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/minecraft-free-download-mac-game-hack In PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-ban_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003338.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3338 28844 bytes
SHA-256: 5e5e8fae94834bf9a14640a8622589892ba108cc7c6fde09136189d7627ac42d

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