Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e36b8b81236924…

MALICIOUS

PDF

34.8 KB Created: 2021-06-25 06:35:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 49345123949337b332413070c5419eb7 SHA-1: 10c54900b5b2ee52910a418b7cfd907959139a38 SHA-256: 08e36b8b812369245502e95c1bda3139a6f4bfd6fa3b9bd9c3260f0f4984477f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs and a prominent call-to-action related to 'Free Robux' and game hacks, indicating a lure for potentially malicious downloads. The heuristic 'PDF_SEO_LINK_FARM' suggests a large number of external links were generated, likely to obscure the malicious intent. 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/free-robux-for-xbox-1-game-hack PDF link annotation
    • https://perpustakaan.smp1madiun.sch.id/repository/how-do-you-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/hack-list-for-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/jailbreak-hack-download-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/free-robux-codes-2021-march_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/roblox-phantom-forces-esp-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/free-roblox-top-battle-games_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/free-robux-generator-no-survey-human-verification_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/como-tener-tener-hacks-en-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/como-hackear-roblox-robux-gratis_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/free-script-executor-level-7-roblox-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/free-maio-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/roblox-money-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://perpustakaan.smp1madiun.sch.id/repository/robux-hack-page_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_off00002faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAA 23024 bytes
SHA-256: 8c43d67b124fcb4763523966686abdbc33cb28703a97b162250ff1af53bafc67
font_01_sfnt_off000063d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D0 18820 bytes
SHA-256: ca206d673976e1f1c372894db3cb88f4638bb6cb55ed0d7e056cc01c65942933

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