Malicious PDF — malware analysis report

Static analysis result for SHA-256 63045e6460fd5c5f…

MALICIOUS

PDF

35.2 KB Created: 2021-06-27 15:50:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e46aef52d51a66bb817bcfbcc57cdb82 SHA-1: a8bd2692f4c66d418021ea93daa8c7a35690c7d7 SHA-256: 63045e6460fd5c5f7cb4859a31e22197946be53c400c8bbaac99f9dda63e784f
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a "link farm" structure, strongly suggesting it is designed to redirect users to external sites. The document body and extracted URLs focus on game hacks and cheats, indicating a lure for potentially malicious downloads or further exploitation. The ML classifier also flagged this PDF as malicious with high confidence.

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.co/app/431946152/roblox-hack-deutsch-pc-2021-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/free-roblox-invitations-loadstrings-full-lua-free-no-virus_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-teleport-using-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-everything-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/get-free-item-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-menu-ios_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-mod-apk-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-back-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-a-refund-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-avtar-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-synapses-free-trial_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-games-no-scams_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/my/tasksIn 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_off000030fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FC 22212 bytes
SHA-256: 5e2406992ec6b0f3eeecc3bcd7935e734afa5fa44c4217a7df5965755242e92b
font_01_sfnt_off0000625d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625D 19792 bytes
SHA-256: 90b5f59fdf0679bb67729d8aaa54823a068a46586b23e0334e2823bf9f2711e3

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