Malicious PDF — malware analysis report

Static analysis result for SHA-256 6012a32680e16e66…

MALICIOUS

PDF

44.9 KB Created: 2021-05-11 23:36:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4cbfe692a9e8283e7d44e36406f8de69 SHA-1: 09681dcd1419af2a09231eba1783cba15cbea124 SHA-256: 6012a32680e16e6623b9d3c03eac69edb1a6281279615fc1d1176945695ff911
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, identified as a link farm, directing users to potentially malicious websites offering game hacks and free currency. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports a malicious intent to redirect users. While no scripts were explicitly extracted, the document's structure and content strongly suggest it's designed to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/how-can-u-get-free-robux-game-hack
    • http://perpustakaan.pn-raha.go.id/repository/daily-free-spins_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/oprewards-login_GM431946152.pdf
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-daily-free-spins-and-coins-link_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/hack-spin-coin-master_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-game-android-free-download_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/como-hackear-coin-master-gratis_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/free-coins-coin-master-daily_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://perpustakaan.pn-raha.go.id/repository/roblox-hack-ga_GM431946152.pdf
    • http://perpustakaan.pn-raha.go.id/repository/roblox-com-hack_GM431946152.pdf
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdf
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-money-hack_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-hack-lost-world-2021-com_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/free-spins-for-coin-master-game_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/how-to-get-free-robux-without-surveys_GM431946152.pdf
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-time-hack-ios_GM406889139.pdf
    • http://perpustakaan.pn-raha.go.id/repository/how-to-download-minecraft-hacks_GM479516143.pdf
    • http://perpustakaan.pn-raha.go.id/repository/earn-free-robux-on-roblox_GM431946152.pdf
    • http://perpustakaan.pn-raha.go.id/repository/daily-free-spins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c26.bin
e47022891296b6788e7682e0e317e469be87eeae00ed5457499488b47274ee05		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C26 28088 bytes
font_01_sfnt_off00008c1a.bin
6d387a6157482ae5d4424ea2a1b018d5f079fe6dbc45eeb2149446a5bd008250		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1A 18696 bytes

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