Malicious PDF — malware analysis report

Static analysis result for SHA-256 6037abbaeaff2011…

MALICIOUS

PDF

35.0 KB Created: 2021-06-26 23:12:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3498651583ce5fb95bad6b843f4a1793 SHA-1: 91c556fc66e2e630eb70c90932896c09198873bc SHA-256: 6037abbaeaff2011fa05b335845d32fd7ca64af3f2e8a926479bdb7e4de77433
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that point to known malicious redirector infrastructure, specifically targeting users with lures related to game hacks and free in-game currency. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a visual download button further supports the malicious intent of directing users to external, potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-it In PDF document text
    • https://dentmate.com.tw/image/data/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-hack-roblox-admin-with-cheat-engine-63_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-group-payouts-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/hackaron-roblox-hack-free-robux-tickets_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/how-to-get-free-bc-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/free-draw-1-roblox_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/roblox-free-printable-coloring-pages_GM431946152.pdfIn PDF document text
    • https://dentmate.com.tw/image/data/files/coin-master-free-coins_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
font_00_sfnt_off0000307e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307E 23068 bytes
SHA-256: 061bca433b9fb90444fb50535cb0f4e746c8b46ab6135a532c1a5ddc786bfd4c
font_01_sfnt_off0000646e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646E 18820 bytes
SHA-256: 9d708e22fc2eaeef977809074d2ea518e92faf9a48ac3d956e5aee6a1c1d23a6

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