Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0eeabec7b6eeea3…

MALICIOUS

PDF

44.7 KB Created: 2020-09-17 00:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0263563d4d140e8cdea41466ba44562d SHA-1: f2e90ecf9b82a9d32a27dddfb55f1efcea7fa5a3 SHA-256: b0eeabec7b6eeea3f0d12458461125a7823628a360cb6b295ea9bc0b23556565
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the PDF is designed to lead users to malicious infrastructure under the guise of providing a strategy guide.

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.
  • 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=xcom+enemy+unknown+strategy+guide
    • http://files.ccmelville.com/uploads/1/3/2/6/132695829/viwowadijipojo_norasa.pdf
    • http://sewefi.amazonindoorplayground.com/uploads/1/3/1/4/131437423/aeae3e5d45bf.pdf
    • https://6c5b9fd4-e0ee-4a78-8096-cced5dbd04a5.filesusr.com/ugd/db80c5_614f4187ff2349c39a61a525e12c5286.pdf?index=true
    • https://6d59d793-7dae-4e0c-9d67-f0a701e509c7.filesusr.com/ugd/e6092c_6f8a793df583405aa976294de0492cb7.pdf?index=true
    • https://9cfc6593-f043-487e-818a-12972c145587.filesusr.com/ugd/8db125_cc761a2b12db465da220f786a1ec7573.pdf?index=true
    • https://0672563e-ee0c-4fc9-9432-dc9ecbf82fa9.filesusr.com/ugd/008e52_00b83d5dcf094357ba6403b69b724eb0.pdf?index=true
    • https://288b053e-6181-465b-8557-0198263118f4.filesusr.com/ugd/6cabbb_4390c6331bf04b11b08f1b3d07b2f3b0.pdf?index=true
    • https://c8f053b2-411f-472e-8c5c-8ab32cd177ee.filesusr.com/ugd/7ef0dc_cf03478238bd429e80c071ae89f18d05.pdf?index=true
    • https://6ad6b0ba-9df7-4b61-8057-6a5ce4ae6978.filesusr.com/ugd/5c9621_666fa6c13c9b41eabb30968b0e3ebd99.pdf?index=true
    • https://368450a8-4cbd-4cad-a205-ecdae6a6e88f.filesusr.com/ugd/1da05d_9124284f51d74e0bb6ceedcda5dae991.pdf?index=true
    • https://f84c539a-369d-47b7-be7a-11d7fe6e460a.filesusr.com/ugd/a07927_c193d9e1646146bfb8b290bd76c99b0b.pdf?index=true
    • https://9f151191-b049-427b-a296-b81101ec4174.filesusr.com/ugd/c722c2_1b572d9d45234f1b9d84ccd5b14922a1.pdf?index=true
    • https://c9d1dfd0-6e83-4399-ac58-51336cde029f.filesusr.com/ugd/8c5bc8_9fc5058d444d4e6889cc59c974af0178.pdf?index=true
    • https://21f027f9-b5f7-4470-9fef-8ec77d8d1f55.filesusr.com/ugd/d5415a_024ee92748c24a698d0de5e0da0a4a05.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000707b.bin
a162bef5d1afb51d47c76d0a271641587f841d90d7892f9886047659abded02f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x707B 5464 bytes
font_01_sfnt_off00008315.bin
87edcaa680e4f136cdb3ebac19b7715c266f1b2b1328a5a7c07a01b05eccec50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8315 10324 bytes

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