Malicious PDF — malware analysis report

Static analysis result for SHA-256 31fc26f44f4f4b03…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 15:45:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cbaf9494e6ecc7012307b13085d5bb25 SHA-1: b9841efe830e264fb135fd5cac251215a0d23856 SHA-256: 31fc26f44f4f4b031d4e49961ada60c10df163fb4b47539be6d0ceffa4248280
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs and a document body that promotes free game hacks and cheats, specifically for Roblox and Coin Master. The presence of a "download button" heuristic and a high ML classifier score indicates a malicious intent to trick users into downloading potentially harmful content. The document's structure suggests it is part of a link farm designed to attract users searching for game exploits.

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.tw/app/431946152/free-vip-server-roblox-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-svg_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/get-me-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-2021-1m-free-robux-give-away_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hacks-para-counter-blox-roblox-offensive-en-espaol_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/guess-the-character-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/auto-speed-hack-legends-of-speed-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-roblox-catalog-items-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-in-asssin-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/comment-hack-roblox-en-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-roblox-to-get-expensive-stuff_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-clothes-celular_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-hack-no-verification-2021_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_off00002f17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F17 22000 bytes
SHA-256: 6f4e28010c887f4b39f702e23a5951aaac6412b032db52cdab7fc2865996116c
font_01_sfnt_off00005fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FCF 19196 bytes
SHA-256: c4df4867231e56a051ad8d190b848938da8ac5f9da62d60a9f3733cbd32457db

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