Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ee12ceeb6bb38e…

MALICIOUS

PDF

47.0 KB Created: 2021-05-19 05:42:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: adc3d5c02ca5c6bc9457a6d603fe70f3 SHA-1: 54c394cdc10936f99611e2916efc77dab0916080 SHA-256: 03ee12ceeb6bb38e768853e62346efc11ed7f1a200acf7f35c324acc79f62961
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a heuristic firing for a PDF link farm, indicating a strong attempt to redirect users to external content. The document body, though partially corrupted, suggests a lure related to game hacks and cheats, further supported by the presence of a download button heuristic. The primary malicious activity observed is the redirection to a large number of potentially harmful PDF files hosted on external domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/406889139/archery-master-3d-hack-unlimited-coins-cheats-game-hack
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/coin-master-hacks-for-gold-cards_GM406889139.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-get-free-robux-app_GM431946152.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/coin-master-free-spins-gratis_GM406889139.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/spins-for-coin-master_GM406889139.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-robux-mobile_GM431946152.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-pe_GM479516143.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/hack-coin-master-2021_GM406889139.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-hack-coins-in-archery-master-3d_GM406889139.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/robux-com-free-robux_GM431946152.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/free-spin-today-coin-master_GM406889139.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-online-tool_GM406889139.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-get-free-robux-generator_GM431946152.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/minecraft-building-hacks_GM479516143.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-hack-coin-master-apple_GM406889139.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/minecraft-marketplace-free_GM479516143.pdf
    • http://www.middleeastautorepair.com/uploaded_files/userfiles/files/how-to-really-hack-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ecc.bin
af3f7632d7723da352dd84d6314fba16bbeb9bee8ffab38b2b645413aa41d5cc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ECC 24488 bytes
font_01_sfnt_off000086e4.bin
c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86E4 3560 bytes
font_02_sfnt_off0000936a.bin
e4446fb8917a5d541b4c62e11a4e73ebabb77927bfa37d18c91cbf5918b93b3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x936A 18928 bytes

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