Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a2a8797d4b163f…

MALICIOUS

PDF

45.6 KB Created: 2021-06-09 14:26:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f0f0bba71d43dca66b7d714b863d93a8 SHA-1: 1a86e33b18fcfab8b6044f7bff8da733bd7e14f3 SHA-256: 44a2a8797d4b163fd41ab6c1c7af1785d7c657cb36b1a2f9dd5e0e625e6d4ac9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-aimbot-hack-v3rmillionm-game-hack PDF link annotation
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/funny-free-roblox-avatars_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-hack-pc-download_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/cheat-engine-67-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://digilib.akperkabpurworejo.ac.id/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id//repository/coin-master-hack-tool-without-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://digilib.akperkabpurworejo.ac.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F8A 27076 bytes
SHA-256: 87b2418f1884c06cca529265fd1f53b31d8064c17b815dafc47b6d110bfeebd9
font_01_sfnt_off00008db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB7 18972 bytes
SHA-256: a2814dcf562dce20f366010a449aaf4db7bd48897d4438ab331853ed2ae576d7

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