Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dbe67a17ddc4ad7…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 09:38:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 9b96a032e3a249ac00080885c993386d SHA-1: 185f54d1b8849ae6f27d986b36833402e962c6aa SHA-256: 4dbe67a17ddc4ad7bde4a915952a95b6adba2c73d5530a19ca1694fbefaff03b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary link directs users to 'https://netcdn.online/app/406889139/hack-coin-master-pc-game-hack', likely serving as a landing page for further malicious activity. The document's structure and embedded links strongly suggest it is designed to trick users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/hack-coin-master-pc-game-hack In PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/wurst-download_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/easy-way-to-get-robux_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_004_off00004e92.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E92 27208 bytes
SHA-256: dde3841cfb63062a51cc5505ea386fb728744cf906a07e0b75a4c883585d12b0
font_01_sfnt_off00008e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E01 17868 bytes
SHA-256: d0fcbd0a52ba681250a66b5fd254fe701dbce3b80d82eca2366e1a97fce9e3f6

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