Malicious PDF — malware analysis report

Static analysis result for SHA-256 0af9b5cccc6be09a…

MALICIOUS

PDF

45.6 KB Created: 2021-06-11 06:25:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 45bca14bb19e39e15787ec09636c83e8 SHA-1: 93f487cfb63fecddaa65d5408d803bf263ad4a7f SHA-256: 0af9b5cccc6be09a4e0bacf81976ddbdf4ab05b05e730fd11e7c943f23efd5ad
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically targeting users interested in game cheats and currency. The ML classifier strongly flagged this PDF as malicious, and the presence of a visual download button further supports a social engineering lure. No scripts were extracted, but the primary attack vector appears to be a malicious redirector disguised as a game hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 3

  • 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.tw/app/431946152/changer-la-valeur-d In PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/roblox-hack-no-survey-or-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/roblox-free-30-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-robux-generator-secure_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-rthro-packages-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-in-app-purchase-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/roblox-royale-high-school-hacks-de-todo_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-robux-and-tickets-in_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/roblox-system_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.fk.unila.ac.id/repository/free-games-like-minecraft_GM479516143.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_004_off00004eee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EEE 26000 bytes
SHA-256: 5f9445d472e8dfea7f10a425157293b62dfc8ee52147c63d0921796c0648ef24
font_01_sfnt_off00008c06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C06 19456 bytes
SHA-256: 89e26fe7d1aea24957d3be24a6dc656a0aeb237735cd30e4b94fbd2091fefa70

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