Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e218f4963359595…

MALICIOUS

PDF

42.7 KB Created: 2021-05-12 16:21:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0253977806fd80edb27e694124c1fcf4 SHA-1: c3d4a2b458d27b2015ab7977057c89e49ebb1ec6 SHA-256: 0e218f4963359595a25c7f03306a57b4b6326dcc4f8d388265638b4da6f06404
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document employs social engineering tactics, specifically a 'ClickFix' lure, to trick users into executing commands or downloading files. It contains a large number of external links, many of which are SEO-optimized and point to game-related download pages, suggesting a link farm designed to attract users seeking free game content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.xyz/app/479516143/how-to-get-minecraft-for-free-on-laptop-game-hack
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/minecraft-client-download_GM479516143.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-games_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/codes-to-get-free-robux_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/minecraft-pe-apk-free-download_GM479516143.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-download-coin-master_GM406889139.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-money_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/games-to-get-free-robux_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-exe_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/microsoft-free-robux_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-links-for-coin-master_GM406889139.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-coin-master-spins-and-coins-for-daily_GM406889139.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-spin-link-today_GM406889139.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-inspect_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-spins-coin-master-hack-2021_GM406889139.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/how-to-earn-robux-for-free-2021_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/roblox-com-redeem_GM431946152.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-free-ios_GM479516143.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-and-coins_GM406889139.pdf
    • https://e-learning.man1boalemo.sch.id/__statics/gudangsoal/files/coin-master-hack-lost-world-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004db8.bin
81b942ceeddfdb50027e7d54c9553972b13cf1e5d31bc4e06dc45475191b1fa1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB8 24488 bytes
font_01_sfnt_off00008573.bin
e6c5d90690ade955def54cc348d22ccb2455245c015e9db3c0b43713c916dea5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8573 18052 bytes

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