Malicious PDF — malware analysis report

Static analysis result for SHA-256 3735d25993aa427e…

MALICIOUS

PDF

41.9 KB Created: 2020-08-01 15:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44e6e7fcf13197106a8f8fc9af38709e SHA-1: 61e2e9fc7a346926154cee40cd400ae55875877d SHA-256: 3735d25993aa427e8e464779724c321009146826388b4a097bf9fcfcf541e7e7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=how+to+delete+discord+messages'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same lure text and URL as the redirector, suggesting an attempt to trick the user into clicking the malicious link. The file is likely a lure document designed to redirect users to malicious infrastructure.

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.
  • 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.
  • 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://ttraff.cc/pify?keyword=how+to+delete+discord+messages
    • http://files.scaffoldingtheatrecompany.com/uploads/1/3/0/7/130739056/mimafoguvataposobag.pdf
    • http://files.chasingbears.com.au/uploads/1/3/1/3/131384101/jazagufa_vopotinazukowog_sofojesegoriku.pdf
    • http://files.angelicawireart.com/uploads/1/3/1/0/131070911/11806b6d8ca.pdf
    • https://cdn.shopify.com/s/files/1/0434/3981/6861/files/84338728494.pdf
    • https://cdn.shopify.com/s/files/1/0431/7062/7735/files/detanaxalatotusak.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/kepekusilux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/24790114572.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wemulaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/3136/2725/files/audi_mmi_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6105/1546/files/discord_server_streaming.pdf
    • https://cdn.shopify.com/s/files/1/0432/9350/7737/files/fozojibabewodovimekas.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/66992613136.pdf
    • https://cdn.shopify.com/s/files/1/0429/8555/4073/files/paraduzokenin.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com/s/files/1/0434/3981/6

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064ac.bin
42d4ca906d94a2a29cda63f8cc656c89a27ceb0a3c1c6aaee4a744a78e1936a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AC 5312 bytes
font_01_sfnt_off000076b0.bin
faf578b1e088db75447a6a539293b68a215bb5e0fdcc0d635152fbbdd3f12326		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76B0 10520 bytes

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