Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a990e0443c5aa6…

MALICIOUS

PDF

34.6 KB Created: 2021-06-19 20:41:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a2d2822412f48de9b079683844a258e4 SHA-1: 5bc895d1550558d9a79f0baa066b969d9295d649 SHA-256: 74a990e0443c5aa61034a363a069e8beda0360a2cf6cec3da06dfcb56f67a4ce
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, many of which are structured as SEO-optimized slugs pointing to game-related hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of a download button lure further supports a malicious intent to redirect users to potentially harmful content. The primary goal appears to be driving traffic to external sites that likely host malware or facilitate scams.

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-shirts-roblox-catalog-game-hack
    • http://perpustakaan.iaiqi.ac.id/repository/hack-coin-master-spin-apk_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/minecraft-hack-download_GM479516143.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-com-real_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/any-gampepass-free-on-roblox_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-spins-coin-master-generator_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-cheat-engine-bypass-updated-2021-unpatched_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-hack-roblox-with-cheat-engine-63_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-generator-without-human-verification_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-coins-for-flip-master_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/hack-give-robux_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/roblox-apocalypse-rising-shenanigans-mod-cheat-codes_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/hacker-usernames-for-roblox_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/robux-gift-card-free_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-daily-spins-and-coins-for-coin-master_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/free-robux-2021-legit-feb-unpatched-instantly-no-wiat_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/how-to-get-free-robux-games_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/bubble-gum-simulator-roblox-hack_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/rewards-roblox-com_GM431946152.pdf
    • http://perpustakaan.iaiqi.ac.id/repository/minecraft-bedrock-hacks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fbb.bin
2c3c072bd2a8f7b9d309d75ea81b09ee0a1b655eedbcfb41f53da1700c18bb3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBB 22688 bytes
font_01_sfnt_off00006236.bin
95f95326df7800178771d1d9b637a1467eb4e4d15636a4e7c52ab77f92ecd085		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6236 19040 bytes

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