Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af83d36e141694a…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 19:46:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4de227336a536a45a2989acaeb584f60 SHA-1: 18bfbff750787da6de6361e55a1e61651a1d750f SHA-256: 6af83d36e141694a8e17c5c1af56a984bcb2760ca787170562cb25e3ba981e70
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document functions as a link farm, directing users to numerous external URLs that promise game hacks and cheats. The document's content and the presence of a large number of external links strongly suggest a malicious intent to redirect users to potentially harmful sites for downloading malware or engaging in scams. The ML classifier also flagged this PDF with high confidence.

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/hackear-coin-master-2021-game-hack PDF link annotation
    • http://windhorsetrek.com/userfiles/files/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-copy-and-paste-hack_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/i-think-my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/hack-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002ea5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EA5 23272 bytes
SHA-256: 2bf6b18bdacc7a5fc513a9db5741af5acfeeb6167a13aa3b3ed1891d96985f29
font_01_sfnt_off0000632a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632A 18408 bytes
SHA-256: e12145284ed43bacda9ea04b287d11ad422f80f0b9ba3e5eb455bf472c7ad3e4

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