Malicious PDF — malware analysis report

Static analysis result for SHA-256 9da86696e7ec8a4e…

MALICIOUS

PDF

44.2 KB Created: 2021-05-15 04:18:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 89866a4d1849d6dce4af45eb60671b3e SHA-1: f68a0636e312870aa4a1cd9bca19ff0cd031d019 SHA-256: 9da86696e7ec8a4e874a17b88612adc9c61fa0c6c6dfca0ee7893aa805c97d03
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are related to game hacks and free currency, indicating a link farm or phishing lure. The ML classifier also strongly flagged this PDF as malicious. The embedded links likely lead to further malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

Heuristics 3

  • 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.
  • 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/431946152/freerobuxhack-us-2021-game-hack
    • http://gomelavto.by/images/free-robux-hack-no-verification_GM431946152.pdf
    • http://gomelavto.by/images/free-robux-not-a-scam_GM431946152.pdf
    • http://gomelavto.by/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://gomelavto.by/images/coin-master-hack-2021-ios-download_GM406889139.pdf
    • http://gomelavto.by/images/coin-master-hack-2021-apk-download_GM406889139.pdf
    • http://gomelavto.by/images/toolbox-for-minecraft-windows-10_GM479516143.pdf
    • http://gomelavto.by/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdf
    • http://gomelavto.by/images/how-to-hack-coin-master_GM406889139.pdf
    • http://gomelavto.by/images/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • http://gomelavto.by/images/robux-codes-generator-no-human-verification_GM431946152.pdf
    • http://gomelavto.by/images/twitter-coin-master-free-spins_GM406889139.pdf
    • http://gomelavto.by/images/free-robux-without-verification_GM431946152.pdf
    • http://gomelavto.by/images/coin-master-daily-spin-free_GM406889139.pdf
    • http://gomelavto.by/images/coin-master-hack-tool-v1-9-download-free_GM406889139.pdf
    • http://gomelavto.by/images/how-to-get-free-robux-app_GM431946152.pdf
    • http://gomelavto.by/images/earn-free-robux-for-roblox_GM431946152.pdf
    • http://gomelavto.by/images/como-hackear-el-juego-coin-master_GM406889139.pdf
    • http://gomelavto.by/images/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdf
    • http://gomelavto.by/images/microsoft-bing-free-robux_GM431946152.pdf
    • http://gomelavto.by/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ac0.bin
665efcfb61a1347d59745c7c584fac99c82c9c63169aa1d52b50c2f0f63c01cd
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC0 25452 bytes
font_01_sfnt_off000084d7.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
pdf-font-stream PDF embedded font (sfnt) at offset 0x84D7 2880 bytes
font_02_sfnt_off00008ec2.bin
efb3faf8613e574aaafbc2c03eecac9d279c27a31d34e4d9725215b9c75db868
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC2 19168 bytes