Malicious PDF — malware analysis report

Static analysis result for SHA-256 0967892d3786442c…

MALICIOUS

PDF

42.6 KB Created: 2021-05-15 05:15:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 251a252e723150772dc8f8e3d75619ca SHA-1: 8bf36ded89eac5eba27a182c4bf1f2ebcd40f3cd SHA-256: 0967892d3786442c30734fcbe187b9837f012a22b56ee1b814c2f878cc327783
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, pointing to websites offering "hacks" and "free spins" for popular games. The ML classifier strongly flagged this PDF as malicious. The document body and extracted URLs suggest a phishing or scam attempt designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • 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/406889139/coin-master-free-spin-link-today-2021-game-hack PDF link annotation
    • http://selectionspdf.fr/images/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/lucky-patcher-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://selectionspdf.fr/images/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://selectionspdf.fr/images/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://selectionspdf.fr/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49BA 25040 bytes
SHA-256: 49c6062c3495b229c21dfe6fae00d2a2e5c9d456ff44ad056ebb4dac651f974f
font_01_sfnt_off0000823e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823E 18812 bytes
SHA-256: 209d45ed87732d827821998a5283e56b95c39a3af4032faff2e6da7d3e76f78f

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