Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b0a86c3a62ef3c7…

MALICIOUS

PDF

45.9 KB Created: 2021-05-11 07:36:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 42fc90305f8da8af58392b6820445dfd SHA-1: 3056557800c407f3257fdcfd0646040f36406b12 SHA-256: 5b0a86c3a62ef3c75fdfd82952f0d9f103f9633b8cbf840b91eee634861cb9d1
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirector infrastructure, specifically promoting game hacks. The ML classifier also flagged this PDF as malicious. The presence of a visual download button and the document body content further support a lure-based attack pattern designed to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/coin-master-3.4-4-hack-download-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-coins-and-spins-online-tool_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-minecraft-codes-2021_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-tix-generator_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/wurst-112_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robux-boost_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-apk_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
stream_003_off00004d4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D4F 24708 bytes
SHA-256: 70602a6045088df1c7e6a7549565098051a64dfa372e19c6da6649aeb5d2e322
font_01_sfnt_off000085fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FA 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE5 18596 bytes
SHA-256: 653e32edcf9ed077e1e00ad7438c0e98859ea5c3c21d14a7675548ef56ce0412

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