Malicious PDF — malware analysis report

Static analysis result for SHA-256 e593b19605b2c969…

MALICIOUS

PDF

37.1 KB Created: 2021-07-03 19:18:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: bec1b85a2aab03dcd2a1041b6b2c862f SHA-1: 6cd513f3cecfe74cc023e4ef9a825f0b8447eb70 SHA-256: e593b19605b2c96958e5b651794f79eac30d12cfb4894714d8d90a13eb883076
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a primary URL pointing to a site offering game hacks and free spins, indicative of a phishing or scam lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to drive traffic to potentially malicious or deceptive content. While no scripts were explicitly extracted, the nature of the embedded links and the ML classification strongly suggest a malicious intent to trick users into downloading or visiting harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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.tw/app/406889139/freespinandcoin-blogspot-com-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/coin-master-fb-free-spins-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hack-unlimited-robux-and-tickets_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/bee-swarm-simulator-gifted-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-buy-robux-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-to-get-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/robux-cheats-club_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hacked-jeans-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/can-i-get-free-robux-please_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/comment-gagne-des-robux-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-account-with-robux-on-it_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/rbx-website_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-promo-codes-2021-july_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-robux-hack-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hown-to-get-ninja-package-for-free-2021-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBA 23092 bytes
SHA-256: 4a389bd03f953354606a02d3c3805b696b398c556e84204a6327fdaab43cab79
font_01_sfnt_off00006277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6277 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00006c5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5C 18900 bytes
SHA-256: 21188b99be3b8f5d7031cb1e7beeffd6c85dae88b9ee67696710ab04d191542f

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