Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee6f6f0ecc9a1c8…

MALICIOUS

PDF

44.8 KB Created: 2021-05-16 00:34:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 11dfeebd83fc27880501928e76ffe354 SHA-1: f7487acddfb71b82d7bbb4e944620e9e9e42fdf8 SHA-256: 9ee6f6f0ecc9a1c840c1042bea573b41540579e345f530481714991a6d339af9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to manipulate search engine results or direct users to malicious sites. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic and the embedded URL 'https://netcdn.xyz/app/406889139/moon-active-games-game-hack' further indicate a malicious workflow. While no scripts were explicitly extracted, the PDF structure and link farm suggest a phishing or content-luring attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/moon-active-games-game-hack
    • http://bibliotheque-perrigny-les-dijon.fr/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/coin-master-links-to-free-spins_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/how-to-hack-coin-master-game-without-root_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/how-to-get-free-robux-on-pc_GM431946152.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/coin-master-free-spins-daily-2021_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/coin-master-free-spins-deutsch-download-2021-link_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/free-generator_GM431946152.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/coin-master-rewards_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/free-robux-on-phone_GM431946152.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/how-to-get-free-robux-hack_GM431946152.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/today-coin-master-spin-free_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/minecraft-building-hacks_GM479516143.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/free-robux-card-codes_GM431946152.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/free-spins-coin-master-site-wwwquoracom_GM406889139.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/how-to-setup-a-minecraft-server-for-free_GM479516143.pdf
    • http://bibliotheque-perrigny-les-dijon.fr/images/how-many-free-spin-links-is-there-for-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_off00004b9e.bin
17a886df38bb08cc57dcdab302d4103d751b2bc68e4f1931ea661c936ddeba55		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B9E 23836 bytes
font_01_sfnt_off000081b1.bin
1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81B1 3380 bytes
font_02_sfnt_off00008d9a.bin
6572202fb11b79787028deba1beb076b209f1779d589edab2c04e97f197d6ee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9A 17920 bytes

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