Malicious PDF — malware analysis report

Static analysis result for SHA-256 18f6d6048fbd9790…

MALICIOUS

PDF

35.3 KB Created: 2021-06-30 02:33:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 61cb5bf1f230724d94d780e78e7b4b41 SHA-1: d0cf54d887cf5da5ec59f71bbe74f6829e06e144 SHA-256: 18f6d6048fbd9790ecd98b9d3dfc921177b58949d28d2c003cb92c8cca7c1db7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to redirector domains, masquerading as game hacks and free currency generators. The primary redirector URL, http://netcdn.co/app/431946152/best-admin-hack-roblox-game-hack, is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a lure designed to redirect users to potentially malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/best-admin-hack-roblox-game-hack In PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-powergrip-gauntlet-roblox-parkour_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-hacking-news_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-any-way-to-make-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/download-hack-admin-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-get-free-robux-from-khaos_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/mangocheats-com-hack-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/roblox-sex-hack-script_GM431946152.pdfIn PDF document text
    • http://pustaka.mesin.ft.unand.ac.id/repository/how-to-get-free-robux-on-xbox_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_off0000316c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316C 22848 bytes
SHA-256: 79144a7fecc987b51648c74eb10287e84bbdbccf9ad62390619169f8af0fd5cb
font_01_sfnt_off00006445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6445 19316 bytes
SHA-256: ed771723c641fd0367239fcb7aba5c754a77a041ed4043cfb5ed9ced94ee1261

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