Malicious PDF — malware analysis report

Static analysis result for SHA-256 c003526d42f13349…

MALICIOUS

PDF

49.2 KB Created: 2021-05-12 06:06:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 48f08a278fddd19b42f617b5a648bcd7 SHA-1: ac8dd1b261eadaa8ec79b58a0cc1d841b76b847c SHA-256: c003526d42f13349494fe2370631351567ae361f8045e46d091d645831f7c80e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that form a link farm, likely intended to direct users to malicious content or phishing sites. The document's content and structure, including the presence of a download button lure and the ML classifier's high confidence score, indicate a malicious intent to deceive users into downloading potentially harmful files or visiting compromised websites. No scripts were extracted, but the overall pattern suggests a social engineering attack leveraging game-related lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/coin-master-free-spins-and-coins-hack-game-hack
    • http://library.stikessuakainsan.ac.id/repository/hacks-for-coin-master-game_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id//repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-robux-no-gift-card_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/wahoogaming-co-free-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-to-coin-master-spin-hack_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spins-2021-app-download_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id//repository/free-coin-master-spins-for-today_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hack-online-android_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-spin-coin-master-twitter_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/free-robux-real-2021_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spins-link-download-free_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spin-ml_GM406889139.pdf
    • http://library.stikessuakainsan.ac.id/repository/how-to-get-free-robux-on-mobile_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/free-robux-apk_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id//repository/minecraft-windows-10-free_GM479516143.pdf
    • http://library.stikessuakainsan.ac.id//repository/how-to-get-robux-without-paying_GM431946152.pdf
    • http://library.stikessuakainsan.ac.id/repository/minecraft-dungeons-free_GM479516143.pdf
    • http://library.stikessuakainsan.ac.id//repository/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ccb.bin
aba39721fa77549cc418a1b7ad568f267897cd179b839100fa9569fb5a1d3692		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CCB 24932 bytes
font_01_sfnt_off00008667.bin
a17c2a746d49ac23b23e38a371e32fddecfcd91b10cf42ff6155bff6b8a07e91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8667 4028 bytes
font_02_sfnt_off00009408.bin
6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9408 2788 bytes
font_03_sfnt_off00009df8.bin
968d77e43c6b0b1c299d9da4b9fdaa5840c103d7fe58a67c77b67690964fdfdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF8 18228 bytes

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