Malicious PDF — malware analysis report

Static analysis result for SHA-256 75f5065386ef56a2…

MALICIOUS

PDF

47.4 KB Created: 2020-08-30 02:07:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf713ac5735c30adee0b84b1d5008d3d SHA-1: 79122d1c589c0a1a1f1953eecf6a8dab3e3ead4f SHA-256: 75f5065386ef56a223bc89d2583e39cb6cd5b6be4a2d4a0f8ccf4d0bfabf1b9e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is also present in the document body. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/wix?keyword=bekhayali+song+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://static.usrfiles.com/ugd/b8c837_9f73c7d0a84141f9b3453a32242d03eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_9bd70585d6d14b55b562ffd30a412f7e.pdf
    • https://static.usrfiles.com/ugd/e73fea_2cfb9d42263c4fd08ba06aa818e74c52.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mosagewenusuwaguxizekud.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/minecraft_bug_report_xbox_one.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/saran.pdf
    • https://cdn.shopify.com/s/files/1/0432/2187/6900/files/skyway_bridge_fishing_reports.pdf
    • https://cdn.shopify.com/s/files/1/0428/5281/0911/files/19984481334.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/rofezifiwu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdf
    • https://static.usrfiles.com/ugd/20d83a_2ab26e16d20f4d36b8abec876bdb7ce2.pdf
    • https://static.usrfiles.com/ugd/0dd040_b31de0066f7042519c6457cefab12a72.pdf
    • https://static.usrfiles.com/ugd/b8c837_3f5de14617d5407e8f4c54e057b94155.pdf
    • https://static.usrfiles.com/ugd/b8c837_423207164244401794b466760c6e51b7.pdf
    • https://static.usrfiles.com/ugd/eb5a6a_2f5c002f61d54af68b3a184d37d99faf.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000612f.bin
2657301df0a550de453f691ab7252df79c54e0a51acc1429abf2e95157f44d8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612F 5008 bytes
font_01_sfnt_off00007239.bin
73e240f8cf2ed26c3b0a69178d4bf99c547f8c0083f4958d9f274a999a0e825d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7239 15636 bytes
font_02_sfnt_off0000a2e1.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E1 4324 bytes

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