Malicious PDF — malware analysis report

Static analysis result for SHA-256 125e10b78ed6c24d…

MALICIOUS

PDF

46.5 KB Created: 2021-06-09 07:35:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: be661b7dd739788d13b66c8073066139 SHA-1: 6352331083a38b7f04e4cc0840fcf905a4c816bc SHA-256: 125e10b78ed6c24daf89a2a398bb59455220d180640386f119c4019df7c44af2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs related to game cheats and free items. The document body, though heavily obfuscated, contains a URL that likely serves as the primary lure. The presence of many external links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/buy-free-robux-roblox-girl-skins-game-hack
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/free-robux-with-no-verification-2021_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-free-spins-link-without-human-verification_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-hack-online-without-human-verification_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/free-minecraft-accounts-reddit_GM479516143.pdf
    • https://katalog.smkn1glagah.sch.id//repository/get-free-spins-in-coin-master_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/get-free-spins-coin-master-link_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/earn-robux_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id/repository/get-free-cards-in-coin-master_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/coin-master-2021-free-spins-link_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id//repository/www-rubux_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id//repository/daily-free-spins-coin-master-heaven_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/how-to-really-hack-coin-master_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/roblox-redwood-prison-free-gamepass_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id/repository/flame-gg-free-robux_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-codes-no-verification_GM431946152.pdf
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/coin-master-hack-xyz-download-free_GM406889139.pdf
    • https://katalog.smkn1glagah.sch.id/repository/javascript-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052ec.bin
b610d1415787d38909348e305cb85ae279545d9be037e51d77bb865a6bbe6fe9		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52EC 26968 bytes
font_01_sfnt_off000092b9.bin
343fe4bf0dd199bcda1d400867cc43f4624f051c3bb5c82ce3e714040cb3aeb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92B9 18556 bytes

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