Malicious PDF — malware analysis report

Static analysis result for SHA-256 b037c60fc1b3924b…

MALICIOUS

PDF

45.1 KB Created: 2020-10-30 13:56:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 52e7cace473159cb360408d92e1e1375 SHA-1: e07b2eca688829e14a8b78cc7398dc0eb9bc3b20 SHA-256: b037c60fc1b3924bd5d2bbf62fc967bdb43e5c6fd7f7da5949e924fc5f684a96
94 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially obfuscated, includes the target URL and a product name, suggesting a phishing lure. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector URL is sufficient evidence of a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.ru/pify?keyword=cooling+fan+switch+kit In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_5f97dca3d3bca.pdfIn PDF document text
    • https://dawiganolakegoz.weebly.com/uploads/1/3/4/3/134367714/fazulizepomilibinaso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377377/normal_5f8dca91d2454.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389582/normal_5f91c4ce04f69.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/aurora_paper_shredder_jam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf13a9f6-0544-4382-92cd-d00717da1d7c/15977059225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a46495f4-d549-4057-81b2-9908f65902ff/47565018967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0499/1387/files/tribal_first_workers_compensation_lacey_wa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5236a72-70e7-4cfc-ae42-ab96c10e3918/18309484822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5378/8569/files/90265803995.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6599 4896 bytes
SHA-256: f6102b4048ab52b3c545d761a5fe787c45c25a1a994262a2cad300c992e4e198
font_01_sfnt_off00007654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7654 10428 bytes
SHA-256: 361e66b60c9d57f4094076e2f43c2292284d136e5099f21015a7e30083361c37
font_02_sfnt_off00009a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A06 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176