Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e398b444d0c5ad8…

MALICIOUS

PDF

44.3 KB Created: 2021-05-12 14:05:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a5f6ef39062b4b37fa64a1fc92bf548f SHA-1: a9d36c7e9da2cc5f792f75c3a5c312b6904951bd SHA-256: 4e398b444d0c5ad839f9c86303a3d2f3590c20e58d9dc8ea4fd286de8ec373da
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to websites offering "game hacks" and "free spins," a common lure for malicious content. The ML classifier also flagged this PDF as malicious. The embedded links likely lead to further malicious downloads or phishing pages, indicating a downloader or phishing attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/moonactive-coin-master-free-spins-game-hack In PDF document text
    • http://pspmrsmbpj.com/opac/repository/my-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-scam_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-spins_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/worst-client_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/10-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004868.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4868 24932 bytes
SHA-256: 581b298f9b339296275488505036f7b4a7e9b80ccacf9336ec8dab9a94098645
font_01_sfnt_off0000819b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x819B 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B4C 18000 bytes
SHA-256: 607e24879c86e77aea2ecea8189ce1ac53cb07a44b728ea7b5016cea096443a5

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