Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0acd26e96926fab…

MALICIOUS

PDF

47.4 KB Created: 2020-08-29 01:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 572bbda660840f7f01bca9c3ac9d41e1 SHA-1: 68f7054d4fe8b2e21a8bcc045a0ed05ac914b262 SHA-256: e0acd26e96926fab43ef51d15396dbf50fc40fdcbf27f7422fc2b4e47f7fc496
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/wix?keyword=limpia+de+huevo+explicacion+cientifica'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links pointing to external PDFs, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the primary intent is to redirect users to a malicious site, likely for phishing or malware distribution.

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=limpia+de+huevo+explicacion+cientifica
    • https://static.usrfiles.com/ugd/b8c837_6a734cfefba04034afa32b3a9a67140d.pdf
    • https://static.usrfiles.com/ugd/b8c837_418382d6619f44baa4a576ba48540eb1.pdf
    • https://static.usrfiles.com/ugd/b8c837_39a7e07516dd45019b2af0ae4b07613c.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e4d68cb59ec4e08b0337687bd48d99e.pdf
    • https://static.usrfiles.com/ugd/b8c837_885af6201ff048b087ed5d83db6c7ee1.pdf
    • https://static.usrfiles.com/ugd/b8c837_235f4b208c544ea4a61d2f19902fb17e.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e48ca9387ef4bb2b2aad3d6e25c9dbf.pdf
    • https://static.usrfiles.com/ugd/b8c837_8efc84ac797149e7b103bb65430a3f90.pdf
    • https://static.usrfiles.com/ugd/b8c837_15391b1509634ac7be1bed88aeae6e23.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/foxelobejal.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/mitifujofes.pdf
    • https://cdn.shopify.com/s/files/1/0438/6449/0149/files/animal_names_in_english_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0435/3110/8504/files/62296835232.pdf
    • https://static.usrfiles.com/ugd/b8c837_14dec97735fa48d18d97a2085a82bd09.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e4e9d4e11fb4c6595592d5dabff8ae7.pdf
    • https://static.usrfiles.com/ugd/b8c837_0252aac7b25f41178d4ae09497bf6393.pdf
    • https://static.usrfiles.com/ugd/b8c837_2cc335b926d94dda95873f10afd7f546.pdf
    • https://static.usrfiles.com/ugd/b8c837_7167622828f74a75b01f80f02a8e7c95.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://static.usrfiles.com/ugd/b8c8

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075e1.bin
e07346356ec57f075ef9f4c01e4298c67504d2d2aeedc4133177e9f0d25b76f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x75E1 5192 bytes
font_01_sfnt_off00008775.bin
6c7067da0dbc02fa8cb30c81be126c79b13ab583c03742792d48e6f4cd1fa8a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x8775 12280 bytes