Malicious PDF — malware analysis report

Static analysis result for SHA-256 025b5c74c7778021…

MALICIOUS

PDF

49.9 KB Created: 2021-05-16 02:02:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7db6a31208210cc99cadf87fb4487de2 SHA-1: 65a84a2730da083d0c813561e647ac5db5eb8948 SHA-256: 025b5c74c777802167344da44b76e57918f10481867ebbb484f434f39be47594
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which point to other PDF files hosted on external domains, suggesting a link farm or redirection to malicious content. The ML classifier strongly indicated maliciousness, and the presence of a "download button" lure further supports a malicious intent. The document's content and embedded links are designed to trick users into downloading further malware, likely through a phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

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/431946152/roblox-report-hacker-game-hack
    • https://citramandiribor.com/ckfinder/userfiles/files/hackear-coin-master-espaol_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/free-coin-master-spins-link_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-hacked-apk-download-for-android_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox-avatar-girl_GM431946152.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/lucky-patcher-coin-master-hack_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-hack-free-spins_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/roblox36com-free-robux_GM431946152.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-hack_GM431946152.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-free-robux-in-2021_GM431946152.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/free-spins-and-coins-coin-master-app_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-get-robux-fast_GM431946152.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/haktuts-coin-master-free-spins-2021_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/minecraft-free-play-no-download_GM479516143.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/coin-master-free-coins-2021_GM406889139.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/free-robux-net_GM431946152.pdf
    • https://citramandiribor.com/ckfinder/userfiles/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b2f.bin
f601eb6a27340db5b467ce73b31c9812d37afae3304a1abab5e8fdcff3ff0412		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B2F 31732 bytes
font_01_sfnt_off00009303.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9303 5696 bytes
font_02_sfnt_off0000a015.bin
79c09b5b6208491040c3b62148bcc9153cd4a1890769045a69a367cda9837255		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA015 18464 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.