Malicious PDF — malware analysis report

Static analysis result for SHA-256 46a61705cc813857…

MALICIOUS

PDF

45.8 KB Created: 2021-05-12 11:01:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9f8ff7a3c876ed16704133ae29efe206 SHA-1: ae1793e529219bbfd3728442b755119056bcbfeb SHA-256: 46a61705cc81385759fa0d1fa444af8f2041d7b823194eb14778d1491b05bfa8
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document body and extracted URLs indicate a lure for free Robux, a common phishing tactic. The presence of embedded URLs and the ML classifier's high confidence score suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or scam attempt, likely leading to credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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.xyz/app/431946152/how-to-get-free-robux-fast-game-hack
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-com-real_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-time-hack-ios_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/free-minecraft-maps_GM479516143.pdf
    • http://opac.akafarma-aceh.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/claim-gg-free-robux_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-ios-download_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/is-windows-10-minecraft-free_GM479516143.pdf
    • http://opac.akafarma-aceh.ac.id/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdf
    • http://opac.akafarma-aceh.ac.id/repository/roblox-hack-2021_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/legitimate-coin-master-free-spins-apk_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdf
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-home_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/daily-free-spin-coin-master-link_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/get-coin-master-hack_GM406889139.pdf
    • http://opac.akafarma-aceh.ac.id/repository/hack-coin-master-apk-358_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004900.bin
953b5499f89dacc44e8561365ecacb47bb34ad6181cafb407d02c233b6cd39e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4900 25552 bytes
font_01_sfnt_off000084a5.bin
4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84A5 3400 bytes
font_02_sfnt_off00008fce.bin
7aab2f7b5cdd23eaead05a2c9912e4a9dcd99cb50fd9423eae012b149ac71853		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCE 18512 bytes

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