Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a84df8aecaa502d…

MALICIOUS

PDF

42.3 KB Created: 2021-05-15 00:02:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab8a3e06c67b16df9c626d26a3a65d88 SHA-1: 4e6d58cc01ced36784dac517bf1d06d479e9bbce SHA-256: 4a84df8aecaa502d9bddaded4bce7bc3dddb6e310066bffbb41a657c50eced0b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically advertising 'free generator / game hack' lures. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the document's structure and embedded URLs indicate a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/roblox-army-free-robux-game-hack In PDF document text
    • https://www.sensationboats.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://www.sensationboats.com/images/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/minecraft-free-android_GM479516143.pdfIn PDF document text
    • https://www.sensationboats.com/images/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sensationboats.com/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://www.sensationboats.com/images/how-to-get-free-robux-2021_GM431946152.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_off0000494b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494B 24744 bytes
SHA-256: 7e196fbb322b030110112477d6fe23e51f5e06145b016d09e837bd70a85cf964
font_01_sfnt_off0000821f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821F 18528 bytes
SHA-256: 3fb3182e9b0518fecce2d6326c4443e9fc052433b5a2fc23416796f92e2510b3

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