Malicious PDF — malware analysis report

Static analysis result for SHA-256 8905409f49478900…

MALICIOUS

PDF

47.5 KB Created: 2021-06-03 08:09:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e9b1198d9788dc687f9edbed685cb081 SHA-1: ad9896ffef8c58d854f177c33b8852cbda6b15c8 SHA-256: 8905409f49478900f4ee8075aa3b28a204ad4c880f83f2b3e8bfb976b7c1479e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized PDF gateways, suggesting a link farm designed to drive traffic to potentially malicious sites. The document body and extracted URLs indicate a lure related to hacking accounts or obtaining free in-game currency, which is a common tactic for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.online/app/431946152/how-to-hack-into-someones-roblox-account-game-hack
    • https://tanahlot.id/assets/CKImages/files/free-minecraft-accounts-reddit_GM479516143.pdf
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • https://tanahlot.id/assets/CKImages/files/coin-master-invite-friends-hack_GM406889139.pdf
    • https://tanahlot.id/assets/CKImages/files/daily-spin_GM406889139.pdf
    • https://tanahlot.id/assets/CKImages/files/who-to-get-free-robux_GM431946152.pdf
    • https://tanahlot.id/assets/CKImages/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdf
    • https://tanahlot.id/assets/CKImages/files/earn-free-robux-today_GM431946152.pdf
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-spins-link-today-instagram_GM406889139.pdf
    • https://tanahlot.id/assets/CKImages/files/roblox-pink-free-robux_GM431946152.pdf
    • https://tanahlot.id/assets/CKImages/files/how-do-we-get-free-robux_GM431946152.pdf
    • https://tanahlot.id/assets/CKImages/files/free-robux-easy-and-fast_GM431946152.pdf
    • https://tanahlot.id/assets/CKImages/files/coin-master-tiradas-gratis-2021_GM406889139.pdf
    • https://tanahlot.id/assets/CKImages/files/free-robux-hacker-us_GM431946152.pdf
    • https://tanahlot.id/assets/CKImages/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
    • https://tanahlot.id/assets/CKImages/files/how-to-hack-people-on-roblox_GM431946152.pdf
    • https://tanahlot.id/assets/CKImages/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdf
    • https://tanahlot.id/assets/CKImages/files/can-you-hack-coin-master_GM406889139.pdf
    • https://tanahlot.id/assets/CKImages/files/minecraft-free-download-unblocked_GM479516143.pdf
    • https://tanahlot.id/assets/CKImages/files/coin-master-spin-link-today-2021_GM406889139.pdf
    • https://tanahlot.id/assets/CKImages/files/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000536b.bin
608bf4fcb393c0c745d806c88b7c81c898201d3bdaaace6fff581143d6ac56d3
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x536B 29308 bytes
font_01_sfnt_off00009577.bin
e61c608513e4255ab8492ebba14a14bba84c9cdf9fdbd64ed05887b932178c19
pdf-font-stream PDF embedded font (sfnt) at offset 0x9577 18852 bytes