Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c2b52c028b3f542…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 16:51:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0eb32adea9cab6fe2cd2e419bedc2ba1 SHA-1: 032b40a82765e91d02bbc576f66a1b05863fb242 SHA-256: 9c2b52c028b3f5420c48a5a1e294e4548ac55f0c8fa91c5ee63650835de26f90
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a link farm or phishing lure, heavily promoting game-related cheats and virtual currency. The presence of numerous external links, including one to 'netcdn.co', suggests an attempt to redirect users to potentially malicious websites. 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/easy-hacks-for-robux-2021-game-hack PDF link annotation
    • https://opac.itp.ac.id/repository/free-roblox-toy-code-generator_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hacks-for-pet-sim-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-jailbreak-money-hack-download_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/assassin-free-admin-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/proxo-descargar-roblox-hack-we-are-devs_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-free-suit_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-online-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-free-2021-accounts_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-game-that-asks-for-your-passwprd_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-fan-club_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/admin-free-download-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-roblox-t-shitt_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-meepcity-hacked_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-in-roblox-assassin-on-ipad_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/cashrapps-free-roblox_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_off00002f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F66 22508 bytes
SHA-256: 84042bc300f70eef78023231cbb9407a1b84e7c241e6624ae4c427ef815cf69b
font_01_sfnt_off000061af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AF 19468 bytes
SHA-256: 5b0d07decef145a41b850fe8ee85f97fda706a8caa3d565e935ef071b891cf8a

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