Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e730156c0aad3f…

MALICIOUS

PDF

34.8 KB Created: 2021-07-07 23:07:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b2464751d89fc2fe71938554c1e35bf8 SHA-1: 583bf3aab0c45237ac5ce4856903c4efeb06b584 SHA-256: 44e730156c0aad3f16d1c6943321202d8e32bf041aa70029f6e9f5df5c7d805d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs and a "call-to-action" phrase, strongly suggesting a lure for users to download potentially malicious content or visit phishing sites. The ML classifier also flagged this PDF as malicious with high confidence. The presence of external links and the document's content indicate an attempt to trick users into seeking game cheats or free items, which is a common social engineering tactic.

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/406889139/coin-master-spin-and-coins-free-game-hack
    • http://librarystkippgribl.com//repository/how-to-get-free-shirts-on-roblox_GM431946152.pdf
    • http://librarystkippgribl.com/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdf
    • http://librarystkippgribl.com/repository/coin-master-fun-free-spins_GM406889139.pdf
    • http://librarystkippgribl.com/repository/coin-master-collect-today-free-spin_GM406889139.pdf
    • http://librarystkippgribl.com//repository/coin-master-hack-iosgods_GM406889139.pdf
    • http://librarystkippgribl.com/repository/coin-master-hack-online_GM406889139.pdf
    • http://librarystkippgribl.com//repository/my-minecraft-account-was-hacked_GM479516143.pdf
    • http://librarystkippgribl.com//repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdf
    • http://librarystkippgribl.com/repository/pig-master-coin-master-free-spin_GM406889139.pdf
    • http://librarystkippgribl.com/repository/chisel-and-bits-mod-minecraft-pe_GM479516143.pdf
    • http://librarystkippgribl.com/repository/www-coin-master-hack-com_GM406889139.pdf
    • http://librarystkippgribl.com/repository/roblox-free-items-glitch_GM431946152.pdf
    • http://librarystkippgribl.com/repository/como-ponerse-hack-en-roblox_GM431946152.pdf
    • http://librarystkippgribl.com//repository/how-do-u-get-free-robux_GM431946152.pdf
    • http://librarystkippgribl.com/repository/cheats-for-rake-classic-edition-roblox_GM431946152.pdf
    • http://librarystkippgribl.com/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdf
    • http://librarystkippgribl.com//repository/get-free-coin-master_GM406889139.pdf
    • http://librarystkippgribl.com/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://librarystkippgribl.com//repository/roblox-pink-free-robux_GM431946152.pdf
    • http://librarystkippgribl.com//repository/roblox-premium-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032de.bin
64e6607dc9b5931fb39ea9acdd64869f08fae8a073585bcfaa069ad7ce1f7dc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32DE 22544 bytes
font_01_sfnt_off0000653e.bin
df3263da83f9cf78b729764c0b4164d8992b3c464e9dfbf9f94e01deafceb410		 pdf-font-stream PDF embedded font (sfnt) at offset 0x653E 18348 bytes

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