Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fe1023682dd17a8…

MALICIOUS

PDF

35.8 KB Created: 2021-07-01 01:59:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 61b72c1f124dfa9a069d03640b0851c5 SHA-1: 13d9da13b8803d185eef823e91fbd0c892e85783 SHA-256: 9fe1023682dd17a8e7a1e238e9abf451682b343d6d176b67f9190d66138d21f4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on elibrary.ikhac.ac.id and appear to be part of a link farm designed to attract users searching for game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a download button lure further supports a malicious intent. The document's content and structure suggest it is designed to redirect users to potentially harmful resources.

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/how-to-hack-money-in-heists-simulator-roblox-game-hack PDF link annotation
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-2021-december_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-doge-mask-in-roblox_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-cheats-for-phone-for-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-roblox-exploits-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/robux-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-earn-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-dominus-lifting-simulator-hack_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/guuuddinfo-hack-robux_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/roblox-hack-com-login_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-stuff-roblox-obby_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-free-robux-for-kids-under-12_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/can-you-generate-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/coin-master-free-spins-april-2021_GM406889139.pdfIn PDF document text
    • https://elibrary.ikhac.ac.id/repository/hack-for-da-hood-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000030a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30A6 23108 bytes
SHA-256: db70aeb3a8b52f25318cb94d5a839df749f934969f924dc28e1b943350f007bb
font_01_sfnt_off00006491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6491 19820 bytes
SHA-256: 13fa4803a7a40286d8b3ca5d58427b4a50644dc81db3d17f9db3f19d6bbcadd7

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