Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af4423ddfb5e989…

MALICIOUS

PDF

43.1 KB Created: 2021-06-09 10:40:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2635f2ec57ad281175d0a9d026e75d3a SHA-1: 732e693063fba4cef707cceacb76f2e16816ecfd SHA-256: 2af4423ddfb5e9893f367ddcde571518c1bcbe9cadedc1c12a6be44a2437bb20
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple external links, including one to 'free-robux-console-pastebin-game-hack', and exhibits characteristics of a link farm designed to drive traffic. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of numerous external links and the lure of 'Free Robux' suggest an attempt to redirect users to potentially malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/free-robux-console-pastebin-game-hack
    • http://italianconnectionsleaford.co.uk/images/tiktok-freein_GM835599320.pdf
    • http://italianconnectionsleaford.co.uk/images/free-printable-roblox-coloring-pages_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/hacks-for-roblox-royale-high_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/get-free-cards-coin-master_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/free-robux-no-offers_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/minecraft-items_GM479516143.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-code-for-free-spins_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/minecraft-free-download-apk-softonic_GM479516143.pdf
    • http://italianconnectionsleaford.co.uk/images/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdf
    • http://italianconnectionsleaford.co.uk/images/roblox-robux-hack-generator-no-survey-2021_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/free-robux-apps-that-work_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-free-daily-spins_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-daily-free-spins-blogspot_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/get-minecraft-windows-10-free_GM479516143.pdf
    • http://italianconnectionsleaford.co.uk/images/coin-master-hack-without-verification-for-iphone_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/hey-you-yes-you-do-you-want-free-unlimted-robux_GM431946152.pdf
    • http://italianconnectionsleaford.co.uk/images/cm-spins_GM406889139.pdf
    • http://italianconnectionsleaford.co.uk/images/roblox-free-hair-girl_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fe5.bin
6325089805d01d82d7b122d3280f3c5720d929855035367b133963346291d6a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE5 23488 bytes
font_01_sfnt_off000084b7.bin
dec0de247624b171c2394d755115cf134646dafcf81d039b489f57e3ef07b2d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B7 18696 bytes

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