Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8007fde358d678f…

MALICIOUS

PDF

43.1 KB Created: 2020-09-07 07:05:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51337aa17f525cf2bbaa4a3dc03c80a3 SHA-1: d93b4c0bb774fed191f87989aabe25b5b01219c5 SHA-256: c8007fde358d678fae1183093880f6d1dbb1c5eb51c156a61e43c9430e8b157a
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, specifically pointing to 'https://ttraff.link/wix?keyword=nxt+takeover+results+bleacher+report'. The document body, though heavily obfuscated, also contains this URL and a large number of other URLs, many of which are benign. The primary attack vector appears to be social engineering, tricking the user into clicking the malicious link under the guise of search results. No scripts were extracted from this sample.

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.link/wix?keyword=nxt+takeover+results+bleacher+report
    • https://static.usrfiles.com/ugd/b8c837_6797cc100474482bbaf7bc7ea767e960.pdf
    • https://static.usrfiles.com/ugd/b77b08_782a407af3e64c0d8d4b3e6b36a69e40.pdf
    • https://static.usrfiles.com/ugd/b8c837_65a89d287a984481afab65a9a83a6242.pdf
    • https://static.usrfiles.com/ugd/430cb2_13ba326a7fde4ec2bb680ca5d8593afa.pdf
    • https://cdn.shopify.com/s/files/1/0434/5859/2934/files/43293929904.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/92882752510.pdf
    • https://cdn.shopify.com/s/files/1/0465/1499/5350/files/8562059733.pdf
    • https://cdn.shopify.com/s/files/1/0441/0372/9304/files/tcap_practice_test_8th_grade_science_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/0939/9193/files/temizlik_maddeleri_kimya_10_snf.pdf
    • https://static.usrfiles.com/ugd/77941b_81f62fb1a7534c82a5c333cb2dadb05e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f16d3cd835f8488aafe8e3267766a5b6.pdf
    • https://static.usrfiles.com/ugd/cacfd7_c9569441a5674f8c9f08ef1a7aad5e1c.pdf
    • https://static.usrfiles.com/ugd/4c76bf_7c8349464c174cddb7aa79a1e9c9fff6.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ed373237ad24cc285c186940c7df5f0.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c2e.bin
be9b177c6d8c58dcda9b96758d9bb5ddf9b3b37f10baf56e8de91add10528b64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C2E 5320 bytes
font_01_sfnt_off00007e49.bin
6e4749dc6102d958220b9bade499c37f1e80a2add34cea45e0ac05040f07b2b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E49 9792 bytes

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