Malicious PDF — malware analysis report

Static analysis result for SHA-256 006b8fdc261f0761…

MALICIOUS

PDF

47.1 KB Created: 2021-05-13 05:57:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 70f22b312af6044652da7bc74d7487a1 SHA-1: c83ddd52179f5d26926c2fb03f61bec51caf0278 SHA-256: 006b8fdc261f07617c691a0d27cb6825e4e867734da685960b5c8228bc1596c0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are related to free in-game items and currency, suggesting a scam or phishing attempt. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the 'PDF_SEO_LINK_FARM' heuristic indicate a coordinated effort to direct users to potentially malicious websites.

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/479516143/minecraft-packs-free-game-hack
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-gold-cards-free-2021_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-robux-no-download_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/is-it-possible-to-get-free-robux_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/roblox-fun-com-free-robux_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-robux-discord-servers_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/easy-way-to-get-free-robux_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-golden-cards-hack_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-daily-free-spins-haktuts_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/roblox-free-item-codes_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/best-free-spins-for-coin-master_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/roblox-hack-codes_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/minecraft-windows-free_GM479516143.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-robux-sites-that-work_GM431946152.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/free-links-for-coin-master-2021_GM406889139.pdf
    • https://elman1td.sam73cyber.com/__statics/gudangsoal/files/roblox-inappropriate-games_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cf7.bin
c323f08d1d4fb963dfa1da03c9fc87c6ae2f5940bbacaf41c4a7b0e3371b5dd0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CF7 28700 bytes
font_01_sfnt_off00008d65.bin
96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D65 2820 bytes
font_02_sfnt_off00009706.bin
28bf341ddf3e4fc6c44bfb74e5ae7c03e5884bb4772c75cdbdc503afd42c19ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9706 17892 bytes

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