Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f8badf06d6f6da8…

MALICIOUS

PDF

20.6 KB Created: 2021-07-06 11:44:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e7e2e8a383950e00dc474aedb119bbf4 SHA-1: ef2dddd200883345a59e0d5fd4394ba5ce2e1ef7 SHA-256: 5f8badf06d6f6da81859fe75df37a92e0c5b9fc67b04d674310bb54d28b1bdbe
94 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 and point to websites offering game-related cheats and hacks. The primary external URI, http://netcdn.tw/app/406889139/game-hunters-coin-master-game-hack, suggests a lure for game exploits. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent behind the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 3

  • 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.
  • 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/game-hunters-coin-master-game-hack PDF link annotation
    • http://lib.uho.ac.id/library/repository/how-to-get-robux-in-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/tiktok-free-view-iphone-apps_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/cone-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-hack-your-friends-account-on-roblox_GM431946152.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003049.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3049 13774 bytes
SHA-256: ce43b9a997e73dab1b45bab20e41c84aba7c62501ef2e0fb6c3892a28b602416

Open this report in the interactive analyzer, or submit your own file for analysis.