Malicious PDF — malware analysis report

Static analysis result for SHA-256 3822f6c62f85fe2f…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 07:42:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 65f1e8bc4cc8160e3ddbfb864210d244 SHA-1: c82a6515d8245db05fe98a59f02c0c4bf4997d94 SHA-256: 3822f6c62f85fe2f517d66f0764e41d0002f7ea25f94f5598617795003e7ad9f
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 SEO-optimized and point to sites offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of numerous links to potentially malicious sites suggests a phishing or scam attempt. No scripts were extracted, but the document's structure and content are designed to trick users into navigating to these external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-spins-coin-master-hack-2021-game-hack
    • http://opac.pps.uin-alauddin.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/free-minecraft-alt-generator_GM479516143.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/minecraft-free-no-download_GM479516143.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/free-minecraft-account-reddit_GM479516143.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-free-spin-link-app_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/hack-version-coin-master-apk_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-get-free-money-from-roblox_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-hacks-no-verification_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/how-to-get-free-roblox-items_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/pokemon-go-free-promo-codes-2021_GM1094591345.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/free-robux-no-human-verification-2021-or-survey-no-download_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-hack-no-verify_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/androeed-ru-minecraft_GM479516143.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/roblox-play-as-guest-free_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/roblox-jojo-blox-hack-script_GM431946152.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
    • http://opac.pps.uin-alauddin.ac.id/repository/free-robux-without-verify_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000308e.bin
5e2cd5e8b2a51371afe5e06a42a0e8b2e0eb9184e1ceb9b70f74d64e02ee9b5c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x308E 23072 bytes
font_01_sfnt_off00006496.bin
06bff1013f90e97ddb143b22f706740fea58d84013a71a1f61bcbcc410d416bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6496 18748 bytes

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