Malicious PDF — malware analysis report

Static analysis result for SHA-256 6faec16f032e3377…

MALICIOUS

PDF

36.2 KB Created: 2021-07-07 09:38:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 97b29ef9d474b5e1db45d584556bbdfd SHA-1: 10e33bcbad82b5302a417324e13ea65bd7dfb9ad SHA-256: 6faec16f032e3377623f7814e64d2567a7c25318b7beca1c13c21067ff05fcc3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a document body that explicitly advertises hacks and cheats for popular games, aiming to trick users into downloading malicious files. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract traffic and potentially distribute malware. While no scripts were directly extracted, the nature of the content and the presence of external links strongly suggest a phishing or malware distribution attempt.

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/431946152/roblox-royale-high-diamond-hack-game-hack PDF link annotation
    • http://lib.baruna-husada.ac.id/repository/roblox-r2d-money-hack-cheat-engine_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-to-use-cheat-engine-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/roblox-account-password-hacked_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/proxo-cheat-roblox-download_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/pokemon-go-free-99_GM1094591345.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-to-make-a-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/play-roblox-and-download-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B1 22848 bytes
SHA-256: f1b9ca38d1ac9b75b14f4e7fb1401e29acaa75851158019ab7b1dbf7962fde13
font_01_sfnt_off0000667e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667E 19724 bytes
SHA-256: 1a67ae04acdcf9bb6160b94dd58735b3f7a5fd1d5d3840fc5372402fae40359c

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