Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8e331e34ade7ace…

MALICIOUS

PDF

41.9 KB Created: 2020-08-30 00:49:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c729fb443248536272ff791b46c5c64 SHA-1: 8d074cbbb743d6921f63ffb758e5731b9a7299ee SHA-256: c8e331e34ade7acef223d583a7e9dd69c8a9fc232e7a83bb9469b8579dbff944
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs, a technique often used to inflate search engine rankings or to host malicious content. One of the primary links, https://ttraff.cc/wix?keyword=cuento+de+los+3+hermanos+y+las+reliq, is flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to potentially harmful websites.

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/wix?keyword=cuento+de+los+3+hermanos+y+las+reliq
    • https://static.usrfiles.com/ugd/2c608b_d9ba327b9c5c475f94c0f5b66939a86b.pdf
    • https://static.usrfiles.com/ugd/b8c837_a96b52027037426995c4055e1696a306.pdf
    • https://static.usrfiles.com/ugd/ce77c6_7115c8ffe3084644a0f531221b1b806e.pdf
    • https://static.usrfiles.com/ugd/3f80ec_20c4a4ec6f5e4acc928d84de77dfec75.pdf
    • https://cdn.shopify.com/s/files/1/0438/5128/4642/files/biases_in_research.pdf
    • https://cdn.shopify.com/s/files/1/0431/3376/3746/files/mirowuzapekatokaxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/android_camera_image_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0436/5035/1257/files/tall_gate_terraria.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/texizodapupajudod.pdf
    • https://cdn.shopify.com/s/files/1/0439/4788/4702/files/57517751402.pdf
    • https://cdn.shopify.com/s/files/1/0438/3172/2141/files/57420803317.pdf
    • https://cdn.shopify.com/s/files/1/0435/7003/6904/files/braindumps_70_347.pdf
    • https://cdn.shopify.com/s/files/1/0433/4619/8683/files/akshaya_lottery_result_today.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/1/0438

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064c0.bin
1c34cd05a0099fb38cb68bd18d60af3db48fcd571921aac287f8d39c3d059051		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64C0 5360 bytes
font_01_sfnt_off000076cc.bin
b333b5cedfc2de66d9d863377cb6789932e9777d0bce1687334437535dfbc0d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76CC 10660 bytes

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