Malicious PDF — malware analysis report

Static analysis result for SHA-256 f45e5cb8263b3fd8…

MALICIOUS

PDF

35.6 KB Created: 2021-07-09 06:21:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a17957151eacb3e2f9bb566a2b7f6dd3 SHA-1: 7c4d0d938c9eb3df2ad17fa0085a1215954570d6 SHA-256: f45e5cb8263b3fd8bf1fb24ffe0035220e3e47dc5bdbe71e338a4dfe3350a4f8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes game hacks and cheats, indicating a phishing or scam attempt. The heuristic 'PDF_SEO_LINK_FARM' and the presence of many external links suggest the document is designed to drive traffic to malicious sites. While no scripts were explicitly extracted, the nature of the content and the embedded URLs strongly suggest a malicious intent to trick users into downloading malware or visiting compromised sites.

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/479516143/minecraft-survival-hacks-game-hack
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-hack-roblox-trackid-sp006_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/minecraft-maps-pe-free-download_GM479516143.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/robux-at-http-free-robux-space_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/redeem-code-roblox-hack_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/cheat-roblox-jaibrach_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/roblox-hacks-2021-download_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/my-robux_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/cheat-code-mining-simulator-roblox_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/get-coin-master-cards-free_GM406889139.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/hack-roblox-pizza-place_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-get-free-bc-on-roblox-2021_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/how-to-get-more-robux_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/easy-roblox-today_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/the-free-giveaway-obby-roblox_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/coin-master-free-spins-haktuts_GM406889139.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/roblox-hack-scripts-for-jailbreak_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/roblox-mining-simulator-xray-hack_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/case-clicker-coin-flip-hack-roblox_GM431946152.pdf
    • https://www.modestuae.com/uploaded_files/userfiles/files/les-commandes-dadmin-roblox-les-plus-cheat_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000353c.bin
d76c8a2f3a7adc7aea9d9ce80aa50c2a2ccbb0a88847235ac7112e54c3a4784c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x353C 22852 bytes
font_01_sfnt_off00006891.bin
3f8c07b70f743712d3b4317b18b553f1a7ae77b3390c9655d2aa42ba9c2140cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6891 18356 bytes

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