Malicious PDF — malware analysis report

Static analysis result for SHA-256 ececa07a725476d5…

MALICIOUS

PDF

44.5 KB Created: 2021-05-12 14:37:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b8b3bf1a602f3ce0bc6e1726d9212617 SHA-1: 18df9ce56e7fe95ee8ced1f6d371b598aeffd6a1 SHA-256: ececa07a725476d523c81d10dabc472d5ff54f9339e01af4265cafad6737bbc8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack lure. The primary URL directs users to a site offering 'Coin Master Free Spins And Coins Hack'. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/406889139/coin-master-free-spins-and-coins-hack-game-hack PDF link annotation
    • http://perpustakaan.pn-temanggung.go.id/repository/minecraft-windows-10-key-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/coinmaster-fan-page_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/roblox-rules_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-temanggung.go.id/repository/free-coin-master-credit_GM406889139.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_off00004b11.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B11 24244 bytes
SHA-256: 386436d2a039bfb69881119bf8c6fa0b49a535a733527916b1967303970beefa
font_01_sfnt_off000081cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CC 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008b7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7E 18228 bytes
SHA-256: 968d77e43c6b0b1c299d9da4b9fdaa5840c103d7fe58a67c77b67690964fdfdc

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