Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2ab7d1cf7557127…

MALICIOUS

PDF

42.9 KB Created: 2021-06-13 21:12:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 863e330512aa730d699e81e19cc2567b SHA-1: 9b142aec0b0ca1732e908c05e4fe9b3d19f16fce SHA-256: d2ab7d1cf755712718987803a5e88983bed6671008928319e9962dc91cded809
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.co/app/431946152/free-robux-hack.org-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-candy-van-exploit_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-catalog-script_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/wall-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-tutorial-how-to-get-your-hacked-account-back_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-with-no-survey_GM431946152.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_003_off00004a7f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A7F 25232 bytes
SHA-256: a65b2a216473fc8b9f947c976ab0b7523ed15f2f5a69c1c2dfec4cba3e8f0e2a
font_01_sfnt_off000083ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83EA 18764 bytes
SHA-256: a56ce7e9cc1964a27437135663b373a4b1e0976f5b2b207113181468d077c66f

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