Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d4057d9870e2aba…

MALICIOUS

PDF

45.6 KB Created: 2020-09-18 12:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 730db347519cc4ec141e67a58d5b853f SHA-1: 1fe13b394e20356d76f14adf5774e8cdf17da780 SHA-256: 7d4057d9870e2aba9a45c3e9eec6e70b7afd58e4cdd005fed9e9a7aa0cab7821
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to the presence of a significant number of external links, a technique often used to distribute malicious content or conduct phishing campaigns. One specific URL, 'https://ttraff.club/wix?keyword=nike+business+strategy+2018', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it is the primary lure. The file also contains a large link farm, further indicating a malicious intent to redirect users to potentially harmful sites.

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.club/wix?keyword=nike+business+strategy+2018
    • https://f4061889-250d-44d1-8477-0bb2ac7b42ea.filesusr.com/ugd/7d1dc9_fe5c04cbeb274817a46f70a7988dc6ff.pdf?index=true
    • https://0dcb0ad8-6d3d-43cf-acab-86718db7cda5.filesusr.com/ugd/38eac1_cfbdebe128e442288cf735920359aa43.pdf?index=true
    • https://b62f190d-c4d5-4acc-a4d3-a554b1142c38.filesusr.com/ugd/d5d855_b2dbba74657b421589f8ab5ac8b28586.pdf?index=true
    • https://a18ff45d-2d98-4340-8368-d44c30947868.filesusr.com/ugd/7dfe85_79ad9d1a9c434d2b8f97943270cfd603.pdf?index=true
    • https://5bc51210-9903-40e1-a7f6-a3a1e93b1481.filesusr.com/ugd/a382ee_9dfee12148ed459a9b50e34e568e6a63.pdf?index=true
    • https://203e580b-202c-4724-ba6c-9cc99e68b4f8.filesusr.com/ugd/de60da_33249778d9fc40f8b020b80b63d76e55.pdf?index=true
    • https://03b398d7-8322-4dbf-9eb3-f98962bcc504.filesusr.com/ugd/bca722_90c5268129ac4c5d89f6f3229359ce0d.pdf?index=true
    • https://d5f0a22c-122f-4d9c-b6df-1a42aee6e50e.filesusr.com/ugd/a4e402_b32c364235b246c9b6de588eab23d745.pdf?index=true
    • https://c0da90c1-5030-4db5-8cde-aaae855c5db0.filesusr.com/ugd/3254bf_85e59467a5e94f40ba2c26eb76651446.pdf?index=true
    • https://aa6205ad-4bbd-4959-84cc-f75515fae23c.filesusr.com/ugd/c3f88d_eb09a63d51f94634b851aac024fb0029.pdf?index=true
    • https://bf1b1a07-7471-4358-861e-fa8ab0472ac5.filesusr.com/ugd/c83fdb_5ad80b60f6dc474186238c3ceec45edb.pdf?index=true
    • 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://a18ff45d-2d98-4340-8368-d44c30947868.filesusr.com/ugd/7dfe85_79ad9d1a9c434d2b8f979432

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007299.bin
bfd6d59989b159d5c37bf02544b79c91ef04410851baa39f80c9e4db169db91c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7299 5616 bytes
font_01_sfnt_off000085d7.bin
3e663ad9d4b8da28b19bd50f3cba136660765b10352c21c84a8a4d2244add5f0
pdf-font-stream PDF embedded font (sfnt) at offset 0x85D7 10488 bytes