Malicious PDF — malware analysis report

Static analysis result for SHA-256 109ab7e79e1c4d6e…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 03:02:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7c34111ac65b5a2a3c6f337f051183fc SHA-1: 3474c5be402c799b197be9cb7e45aa9e93ac28a7 SHA-256: 109ab7e79e1c4d6ecdb4a04dcb59916810ccbee241deb907a855b5cc71667b80
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a specific external URI, all related to game hacks and cheats, indicating a phishing or malware distribution attempt. The heuristic firings, particularly the PDF link farm and ML classifier, strongly suggest malicious intent. The document body, though partially corrupted, reinforces the theme of obtaining free in-game items, likely as a lure.

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/cool-free-outfits-in-roblox-game-hack
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-hack-beach-simulator-in-roblox_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/blox-fish-free-robux_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/hack-to-get-robux-2021_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/old-roblox-accounts-for-free_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/hackear-coin-master-2021_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-hack-version-download_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-robux-generator-2021_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-ro-get-free-robux-just-by-using-a-hat_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-hack-generator-tool_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-roblox-accounts-2021-june_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/cheat-phantom-forces-roblox-2021_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/how-to-get-free-robux-hack-on-mobile_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/free-roblox-games-for-kids_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/roblox-bloxburg-hack_GM431946152.pdf
    • https://www.ktcart.co.in/uploaded_files/userfiles/files/coin-master-free-spins-no-human-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c1.bin
b7ac5257fabe6ead2c60ba776e5564fe7ac722fa47b5187be076c88bee3444ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C1 21896 bytes
font_01_sfnt_off000061c8.bin
a472a5141b3affeea55b8e9da0b5c2d0ec38dbe38d5024af782dbe3e90722b7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C8 19012 bytes

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