Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f6bbad19cdcf1c…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 18:10:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ded66bdf2aa11d605fdad3bc83942a98 SHA-1: d09545337fb417936711b071e371a52dd7ca9b5b SHA-256: 09f6bbad19cdcf1cc6bae5886a7d5b7e2e02c9ae688373606f0f49f66c57b41e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document, generated by wkhtmltopdf, contains a large number of embedded URLs that appear to be part of a link farm or SEO scam, promoting game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests an attempt to redirect users to malicious sites or download potentially unwanted software. No scripts were extracted, but the overall structure and content point towards a phishing or malware distribution lure.

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 http://netcdn.co/app/431946152/greenwood-town-roblox-hack-game-hack PDF link annotation
    • http://perpustakaan.yudharta.ac.id/etj/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/chreck-cashed-v3-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/como-ser-hacker-en-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/ways-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/free-robuxrblx-file_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/roblox-free-robux-freedom_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/2021-how-to-make-a-free-group-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/free-roblox-robux-hack-generator-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.yudharta.ac.id/etj/repository/tiktok-free-view-iphone-apk_GM835599320.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_002_off00002d6a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D6A 22836 bytes
SHA-256: cd7dc48b0a8c45e1fb1d6ead132c46b075a20a13cd9a5e4061a8086e603f0c98
font_01_sfnt_off000060d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D9 18996 bytes
SHA-256: b2b5f1c987e6e69fb7933500b0afc70671b4ab25f31e7db774cd695672fa0f48

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