Malicious PDF — malware analysis report

Static analysis result for SHA-256 07301f21cdaad355…

MALICIOUS

PDF

44.7 KB Created: 2021-05-12 03:02:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3533c05bc0d66423ec7eda8b11e35d21 SHA-1: 55e84f07e579487550c5baeb8214beadd30aafe3 SHA-256: 07301f21cdaad355dd25424cf636c4caa69e877b3001ab9db96739bef41813c6
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was identified as malicious by an ML classifier and contains a large number of external links, many of which point to other PDF files. The document body and extracted URLs suggest a lure for game-related cheats and hacks, likely intended to lead users to download further malicious content. No scripts were extracted, but the PDF structure itself facilitates the distribution of links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/coin-master-free-link-2021-game-hack
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/wwwcoin-master-hack-game-download_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/real-robux-generator_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-do-we-get-free-robux_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/codes-how-to-get-free-robux_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/hackear-coin-master-sin-verificacion_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/roblox-redeem-card-codes-free_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/minecraft-login-free_GM479516143.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/free-free-robux_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/coin-master-free-cards-and-spin-link_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/hack-mod-coin-master_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/coin-master-hack-spin-160-pro_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/huskybuckscom-free-robux_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/coin-master-35-13-hack-download_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/coin-master-hack-apk-free-download_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/how-to-hack-a-roblox-account-2021_GM431946152.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/coin-master-hack-software-download_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib//repository/online-coin-master-free-spin-app_GM406889139.pdf
    • http://perpustakaan.pt-yogyakarta.go.id/lib/repository/free-shirt-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049f8.bin
bfa270e4825fa0b6ea5c668bee65f503baab66d8eb10b2acbb26f8acb397216d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F8 25092 bytes
font_01_sfnt_off00008217.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8217 2880 bytes
font_02_sfnt_off00008c02.bin
be459003f2db1a934c49859962f2962ce704e042ee0985c73311b64c11e09449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C02 18284 bytes

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