Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0732b1e6bea2d5…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 01:49:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c01c4dc440dfdae3b6c813a1159eb22e SHA-1: c077a87e73680f489ce57a5ddc9f89d5c52f0095 SHA-256: 7e0732b1e6bea2d54c47b2402e71bf82483a2e333acc238e3053195bcf3e6ca8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external sites, many of which are SEO-optimized and appear to be part of a link farm designed to attract users searching for game cheats and free in-game currency. The presence of a direct download URL and the ML classifier's high confidence score indicate a malicious intent to distribute potentially harmful content. The document body and extracted URLs suggest a lure for free Robux and Coin Master spins, 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/431946152/free-robux-no-hack-robuxian-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-project-jojo-free-items-exploit_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/junio-2021-hack-robux-en-roblox_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-game-hack-version-download_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/get-robux-com_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-dumb-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-often-pubg-uc-flare-up_GM1330123889.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hack-minig-simulator-v3rmillion_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAD 22240 bytes
SHA-256: b8f6f73f133545caaf11ad7bff33df8358a2499aaadb6ccd501825df3b1833fd
font_01_sfnt_off0000602e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602E 18820 bytes
SHA-256: 2b3cbe20e1f9eb2c405d6b041898a089027261bcfcd1aa2d5e4025f14e35f0f0

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