Malicious PDF — malware analysis report

Static analysis result for SHA-256 ade5245980d7f7c5…

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 04:54:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8335b137e0d2a525970f0af1f0b6a128 SHA-1: 13af376dbb3654fdc7540c4866581401c0684cbd SHA-256: ade5245980d7f7c5293dd8e554580a566a50119677249796cda6126df25a5c53
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to sites offering game-related cheats and generators. The ML classifier and PDF link farm heuristics strongly indicate malicious intent. The document body and embedded URLs suggest a lure for users seeking in-game advantages, likely leading to phishing or malware 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-promo-codes-generator-no-human-verification-game-hack
    • http://lib.smklabor.sch.id/repository/roblox-free-items-2021_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdf
    • http://lib.smklabor.sch.id/repository/get-free-cards-in-coin-master_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/hacker-coin-master_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/free-roblox-locked-accounts-with-obc-2021_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/ben-10-roblox-cheat_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-free-roblox-items-using-code_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-free-items-on-roblox-no-pastebin_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/hacks-for-booga-booga-roblox_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/sgtwilk-robux-hack_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/hack-avatar_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-free-roblox-real_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/cheat-engine-hack-in-roblox-high-school_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/roblox-free-suit-t-shirt_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://lib.smklabor.sch.id/repository/get-100-robux-free_GM431946152.pdf
    • http://lib.smklabor.sch.id/repository/how-to-hack-in-someones-account-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003014.bin
97870c024cbcde8eb1cca3e1c67da43bef49035f1cd3b8fadddd88dd3a32fa13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3014 23192 bytes
font_01_sfnt_off00006464.bin
748f25406de1f4d949a021297e7185f3754fd57334e45cc0bacb258ca6a6b056		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6464 19572 bytes

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