Malicious PDF — malware analysis report

Static analysis result for SHA-256 b468505969cbf8f2…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 19:50:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e49132a33c858df5cb9fe87be6252ec7 SHA-1: 4c908b3158175711ffc25d758f37137f8f71f655 SHA-256: b468505969cbf8f2b1f135ecfc18873ed1fb31ec7bb876f8c26b492e8a6e63e8
102 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a malicious lure, employing a large number of external links disguised as SEO-optimized content related to game hacks and cheats. The primary goal appears to be directing users to download potentially harmful files from the linked URLs, as indicated by the PDF_SEO_LINK_FARM and PDF_URI heuristics. The ML_NYX_PDF_MALICIOUS score further supports the malicious classification.

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-murdermystery-free-online-game-hack PDF link annotation
    • http://psb.sd-alazhar29.sch.id/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/emperor-hacks-roblox-discord_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-card-collection-in-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/all-vip-admin-commands-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-glitches-and-cheats-for-lumber-tycoon2_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-grand-blox-auto-cheats_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/roblox-apocalypse-rising-hack-dll_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-golden-cards-hack_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-robux-2021-on-phone_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/coin-master-game-hacking_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/pants-free-roblox_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/how-to-get-100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/can-pokemon-go-free-evolution_GM1094591345.pdfIn PDF document text
    • http://psb.sd-alazhar29.sch.id/repository/info-roblox-com-robux_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_off00002e24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E24 22368 bytes
SHA-256: c3da963e6b424ffa1874ac607d541b2049e6e2d5845d6403a447e36bfaae7f07
font_01_sfnt_off00005f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F80 19824 bytes
SHA-256: 9073a17dbb3db816d00720006828bc5523bf88e355bc3f0a812a606e10fd0f04

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