Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6ff820e5373256…

MALICIOUS

PDF

34.1 KB Created: 2021-06-28 08:56:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cbd3f8ec1d15aae2bebab676d4e05049 SHA-1: f1e06ed4be1658875c1ed697c82a252e3a55597a SHA-256: db6ff820e53732568444109042f52a9cc48e4afee51a6fd0c919e1fd0f2826ab
82 Risk Score

Malware Insights

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

The document contains multiple embedded URLs and a prominent call-to-action, strongly suggesting a phishing or malware distribution attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document may be instructing the user to open a password-protected archive, a common tactic to bypass security filters. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/roblox-free-roux-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-free-robux-no-phone-number_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-youtubers-accounts-with-passwords-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-codes-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/fat-dude-trying-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/wyas-of-getting-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-unlimited-spins_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_off00002f36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F36 22360 bytes
SHA-256: 31f108533263e1741236d71eec2fef41bc8ca5d488ccec7359963d87635b8bdb
font_01_sfnt_off000060ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EE 18788 bytes
SHA-256: 240f26960413d3375b32b54d3a16c3eb3bd7324ec8649811f17e0fe1da2802cb

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