Malicious PDF — malware analysis report

Static analysis result for SHA-256 714f8cc5acb17eca…

MALICIOUS

PDF

44.0 KB Created: 2021-06-09 15:00:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a45ce5c617c07338b0765b47a67fc7f4 SHA-1: d32144f4ed3d398e28e4d4d0f41c58b543ac66c3 SHA-256: 714f8cc5acb17ecaa917cd5f579a0396d11fdcbc4da08d7a2bdd59c02016506a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a "link farm" by heuristics, directing users to external sites that appear to offer game-related hacks or cheats. The ML classifier strongly indicated maliciousness, and the presence of a "download button" lure reinforces the deceptive nature of the document. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or social engineering attempt to drive traffic to malicious or unwanted content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/free-pink-hair-roblox-game-hack
    • http://lib.kunci.or.id/repository/how-to-get-free-spins-grom-coin-master_GM406889139.pdf
    • http://lib.kunci.or.id/repository/easy-robux-today_GM431946152.pdf
    • http://lib.kunci.or.id/repository/www-bandicam-com-free-robux_GM431946152.pdf
    • http://lib.kunci.or.id/repository/robux-generator-free-dowloadn-torrent_GM431946152.pdf
    • http://lib.kunci.or.id/repository/mcpe-master-coins-hack-download_GM406889139.pdf
    • http://lib.kunci.or.id/repository/simple-hack-roblox_GM431946152.pdf
    • http://lib.kunci.or.id/repository/minecraft-pe-015-0-apk-free-download_GM479516143.pdf
    • http://lib.kunci.or.id/repository/free-roblox-cupcake-toppers_GM431946152.pdf
    • http://lib.kunci.or.id/repository/are-tiktok-free-views-without-verification_GM835599320.pdf
    • http://lib.kunci.or.id/repository/free-robux-no-verification-2021-android_GM431946152.pdf
    • http://lib.kunci.or.id/repository/minecraft-java-code-free_GM479516143.pdf
    • http://lib.kunci.or.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://lib.kunci.or.id/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdf
    • http://lib.kunci.or.id/repository/daily-free-spins-on-coin-master_GM406889139.pdf
    • http://lib.kunci.or.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • http://lib.kunci.or.id/repository/roblox-carfs-free-2021_GM431946152.pdf
    • http://lib.kunci.or.id/repository/get-free-tiktok-followers_GM835599320.pdf
    • http://lib.kunci.or.id/repository/coin-master-free-cards-hack_GM406889139.pdf
    • http://lib.kunci.or.id/repository/easy-robux-today-com_GM431946152.pdf
    • http://lib.kunci.or.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fb6.bin
233b611baba2f8889ff28ed7a3583ca96169d3aca0c986c63a09be502e8bf7be		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FB6 24672 bytes
font_01_sfnt_off000088b1.bin
2aae82132fdd4976587b0348de4bede167955cf20f2dc76210f4dcf920a11d80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B1 18620 bytes

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