Malicious PDF — malware analysis report

Static analysis result for SHA-256 37a9e4463f2d3e46…

MALICIOUS

PDF

43.1 KB Created: 2021-05-17 06:05:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 04a93fe1b950d63d8823895e31b25d00 SHA-1: 58408832a864c6d369cecd78b789a809987de0b5 SHA-256: 37a9e4463f2d3e46cf994c9485bc715072d2c38e4dadef7147e54322b58e6b82
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as game hacks and generators. The document body and extracted URLs strongly suggest a phishing or malware distribution attempt, likely using a spearphishing attachment vector. The ML classifier also flagged this document with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/minecraft-free-trial-game-hack In PDF document text
    • https://hotelartskathmandu.com/userfiles/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://hotelartskathmandu.com/userfiles/files/best-free-coin-master-spins_GM406889139.pdfIn 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_off00004ecf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ECF 25584 bytes
SHA-256: fc2ea3eccdb247ec55de74751f96df8a657d6e383a031d3858827c1ab02c8cf8
font_01_sfnt_off00008869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8869 17644 bytes
SHA-256: eaa999d9fcd0e41c3411a6787ff304b3b9a642a81f97c4ae06503d53e3265cce

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