Malicious PDF — malware analysis report

Static analysis result for SHA-256 425dbbd85b47d2c9…

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 04:30:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9652d9f1f9e1ec9cb44ddfc1558d3662 SHA-1: d0653686a1a360f50967c7a6667a412fdc54529c SHA-256: 425dbbd85b47d2c96ea14658e7cc2abaa032608bf7a0aa55b770789a9c629de0
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 game hacks and cheats, suggesting a link farm or phishing attempt. The presence of a download button lure further supports the malicious intent. The document's content and structure are indicative of a social engineering tactic to drive traffic to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-life-hacks-game-hack
    • https://lib.insan-unggul.ac.id/repository/free-robux-easy-and-fast_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/free-coins-on-coin-master-2021_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/how-to-hack-coin-master_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-coins-in-coin-master-game_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/robux-without-verification_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/coin-master-hack-app-for-iphone_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/roblox-prison-life-hack_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/roblox-login-hack_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-spons-apk-2021_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/free-robux-hack-generator_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/hacked-roblox-accounts-list_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/roblox-2021_GM431946152.pdf
    • https://lib.insan-unggul.ac.id/repository/coin-master-free-shield-link_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • https://lib.insan-unggul.ac.id/repository/websites-that-give-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a38.bin
eb3b66e48b22582d7810e781dbda7919d70252837ac41fce390b9ec43aa62a74		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A38 24292 bytes
font_01_sfnt_off0000812e.bin
c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x812E 2892 bytes
font_02_sfnt_off00008b18.bin
a9f228f82f523f82f2ec29969fa693daed0cd9273bc8dad9e6ca4184f04ba0fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B18 17740 bytes

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