Malicious PDF — malware analysis report

Static analysis result for SHA-256 80619ee6b17814bd…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 08:15:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c3d0f7882dce1eb8dca537f8c1c94022 SHA-1: b0bf1cf8c112d7d60d2dde4ef939aa4248a82f23 SHA-256: 80619ee6b17814bdd8d300ae4de37704525ef35adacb049d5b45c509595db299
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are related to game cheats and free in-game items for popular games like Roblox and Coin Master. The ML classifier and PDF heuristics strongly indicate malicious intent, likely to direct users to phishing sites or download further malware. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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-images-game-hack PDF link annotation
    • http://e-library.stienobel-indonesia.ac.id//repository/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/hack-download_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/robux-scam_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id/repository/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://e-library.stienobel-indonesia.ac.id//repository/coin-master-100-spin_GM406889139.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
font_00_sfnt_off00003373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3373 22684 bytes
SHA-256: 2c8f776524a2076fafd454828dae534cbeb3f710964c2da11d6b25bdc1865330
font_01_sfnt_off00006617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6617 18748 bytes
SHA-256: bf47317ac3eb75c41d6e114fad8eb749f701cb38c6048cbe79b2f4a9a3dcbfc0

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