PDF static analysis report

Static analysis result for SHA-256 4b36bf6c4954da31…

SUSPICIOUS

PDF

48.8 KB Created: 2021-06-08 11:49:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7ef6956cb5fe8e05aedec8919eb0c330 SHA-1: c0c55eca32c3e01db03b1823fe00e64a442a00b8 SHA-256: 4b36bf6c4954da31d8622c2df6a34d17abf202aefdb64c1fcf36cb53b33a84e9
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and text referencing game hacks and cheats, strongly suggesting a lure to download malicious content. The ML classifier also flagged this PDF as malicious. The presence of a "Click here to download" phrase further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 3

  • 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/roblox-esp-hack-2021-game-hack PDF link annotation
    • http://foo.com.tw/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-weird_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-exploit-hack-full-lua-overpowered-commands_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-earn_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-android_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000523d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x523D 28180 bytes
SHA-256: 603950d3a1f63e687e5b6a918f7bb9ae2bd986529a293ecb0b19ad2b26da8075
font_01_sfnt_off00009091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9091 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7C 18760 bytes
SHA-256: 00ea5ba948c1c742751f2d1d49669b3f56a555fc87f021799a012689d6d9cf8f