Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b41e20cae0ebc93…

MALICIOUS

PDF

44.5 KB Created: 2021-06-04 00:54:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2b05bc529ed7486384087f0f2534c9f8 SHA-1: 24d1ed25fd58687bebba830395092f6a563c78d3 SHA-256: 0b41e20cae0ebc93121e376cb8b962ded89c253f36fd346d371c5ab11738cc84
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a game hack redirect lure, pointing to a malicious URL. The document body, though heavily obfuscated, contains references to the same malicious domain. This suggests the document's primary purpose is to trick users into visiting a site that likely hosts further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/oprewards-com-login-game-hack PDF link annotation
    • http://perpustakaan.pn-tapaktuan.go.id/repository/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-tapaktuan.go.id/repository/cm-daily-spins_GM406889139.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_off00004f86.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F86 25204 bytes
SHA-256: ee0aea6395bc51d680802226a0e1781b47529b1834c4b2a1fa1b00ad1c341258
font_01_sfnt_off000089cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89CB 18752 bytes
SHA-256: c42b4bb1fbee134c465cf242b0910ab071fad09d05a92a897e82c1c678a63515

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