Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e4d70312b73fce…

MALICIOUS

PDF

43.0 KB Created: 2021-05-15 12:08:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ef134c955af50d764d9dbf9323b17379 SHA-1: ed534239b848a601c49b7dacbac8b9d4f89fb5e0 SHA-256: 00e4d70312b73fce67e6d42f03e83001f3e191faf9e949ebcf0df87b1582bf1c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO abuse tactic. The document body, though heavily obfuscated, contains URLs that appear to be lures for game-related hacks or cheats. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points towards a drive-by download or redirection attempt to host malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/free-minecraft-domain-game-hack
    • http://fishtech.is/images/buy-robux-free_GM431946152.pdf
    • http://fishtech.is/images/juego-hackeado-de-coin-master_GM406889139.pdf
    • http://fishtech.is/images/games-that-give-you-free-robux_GM431946152.pdf
    • http://fishtech.is/images/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdf
    • http://fishtech.is/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdf
    • http://fishtech.is/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://fishtech.is/images/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://fishtech.is/images/free-robux-games-that-actually-work_GM431946152.pdf
    • http://fishtech.is/images/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdf
    • http://fishtech.is/images/free-spin-coin-master-2021-link_GM406889139.pdf
    • http://fishtech.is/images/free-spin-link_GM406889139.pdf
    • http://fishtech.is/images/today-free-spin-coin-master_GM406889139.pdf
    • http://fishtech.is/images/free-robux-no-human-verification-generator_GM431946152.pdf
    • http://fishtech.is/images/coin-master-free-cards_GM406889139.pdf
    • http://fishtech.is/images/free-spins-on-coin-master-game_GM406889139.pdf
    • http://fishtech.is/images/coin-master-free-coins-link-2021_GM406889139.pdf
    • http://fishtech.is/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdf
    • http://fishtech.is/images/free-robux-gift-card_GM431946152.pdf
    • http://fishtech.is/images/free-robux-promo-codes_GM431946152.pdf
    • http://fishtech.is/images/coin-master-game-free-spin_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b0c.bin
4832df6c25e55a4bd1d2bf0b734b861b62146555eb3facaa5b12bd378f478fe9
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0C 26104 bytes
font_01_sfnt_off0000862e.bin
76c28744f84ad7629b6da3b9b5fa316c70ee5e9c8c86c1afc77ec6d129fcd0f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x862E 18140 bytes