Malicious PDF — malware analysis report

Static analysis result for SHA-256 895d34cd26e435a5…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 22:31:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b657512958241707684709a51d4c8461 SHA-1: 2f019d5debe56f757223e89c484c16a61f4f6363 SHA-256: 895d34cd26e435a52177a1cfee6b93a5f5bc3b8d3bf66b755049d6a38ccb3b29
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 structured as SEO-optimized links for game-related cheats and hacks. The primary URL, http://netcdn.co/app/431946152/free-real-credit-card-for-roblox-game-hack, suggests a phishing or scam attempt. The presence of a "download button" heuristic further supports the idea that the document is designed to trick users into downloading malicious content. No scripts were extracted, but the overall structure and linked content indicate a malicious intent to lure users into potentially harmful downloads.

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/free-real-credit-card-for-roblox-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/comment-hacker-des-map-roblox-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-do-you-hack-free-robux-2021-on-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/can-people-actually-hack-into-a-roblox-account_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/build-roblox-bloxburg-mansion-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/my-ex-boyfriend-cheated-on-me-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/kristjon-15k-robux-reward-hack-tutorial_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-accounts-with-passwords-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/get-free-robux-in-1-minute_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-hack-on-roblox-no-usb-no-download_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-robux-hack-generator_GM431946152.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
font_00_sfnt_off00002ffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFA 22624 bytes
SHA-256: 760298074292626fccce4bee5d0fd78563175948302884abd44fb8b5ee05b962
font_01_sfnt_off00006278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6278 19048 bytes
SHA-256: 1bfa22b4a8a2587effb6355180f4051751087ae21562ef503c77c653d7c3b0c4

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