Malicious PDF — malware analysis report

Static analysis result for SHA-256 445d10262bb77803…

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 20:57:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 36c0ccaa1e61ac1592a3fae8b529d845 SHA-1: 6bd4c81cfd691fa24c6bd33db41e94dfb3870cf3 SHA-256: 445d10262bb77803b04967995dd20d17f1db168a0941e280a5400ae09942dd39
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains numerous links to external websites, many of which are SEO-optimized to appear as legitimate resources for game hacks and cheats. The primary URL, http://netcdn.tw/app/431946152/roblox-cheat-engine-god-script-sbo-game-hack, directly suggests the download of a cheat engine script. The presence of a visual download button lure further supports the malicious intent of directing users to potentially harmful downloads.

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/roblox-cheat-engine-god-script-sbo-game-hack PDF link annotation
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/auto-clicker-free-for-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-hack-roblox-accounts-2021-october_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/block-free-purchase-roblox_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-hack-gui-download-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-dashing-simulator-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-any-item-free-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/boot-offline-roblox-hack_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/aimbot-for-roblox-free-for-all_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-is-bloxburg-free_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://pasca.unisba.ac.id/elibrary/repository/roblox-how-to-get-free-faces-2021_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_off0000328f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328F 22800 bytes
SHA-256: f04a755d5a9f758d89f803afc9b4b85f1e8ed5cbf41ba341f9612d6557369f1d
font_01_sfnt_off000065af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AF 19040 bytes
SHA-256: 99f9baea3df35b4f8e063375f4bbac255ff26bf5d6562a538d0a7a38d3e595f5

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