Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7364f85cf0042ca…

MALICIOUS

PDF

47.5 KB Created: 2021-06-08 13:28:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 18691504472c2b4f779972a0de92ccea SHA-1: c7abf51c4f86bd5d2702060523510caf395d9f54 SHA-256: d7364f85cf0042ca73357a886e11179b748006e1ed72e3c8d9737a2dce58e0e8
62 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs and a visual download button, strongly suggesting a lure to download a secondary payload. The ML classifier also flagged this PDF as malicious with high confidence. The document body, though heavily obfuscated, contains references to game-related downloads and hacks, aligning with a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 https://netcdn.tw/app/431946152/free-cod-style-games-roblox-game-hack PDF link annotation
    • http://lib.fisipumt.ac.id//repository/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000504c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x504C 26912 bytes
SHA-256: 497d31321c8db395bc9a8d300258b16291526bd88d17f5ea8b0b6313850f0b7b
font_01_sfnt_off00008af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF6 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000094e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E1 18896 bytes
SHA-256: cd317871d6c507df6b510df85622c0cd2107d4dd41bae4045db9defebd31d2cb

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