Malicious PDF — malware analysis report

Static analysis result for SHA-256 58360330bbd2da2a…

MALICIOUS

PDF

41.9 KB Created: 2020-08-28 20:47:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3878608f36ca4d43132da404302c584f SHA-1: b20b844c93dc4ace9f21c24c564476e84351dc8c SHA-256: 58360330bbd2da2ab996ea0da2758fb801e8955f8d7efccccb1b10ad9d9426b9
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.com/wix?keyword=new+testament+pdf', is identified as a malicious redirector. The presence of this malicious link and the overall structure suggest an attempt to lure users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/wix?keyword=new+testament+pdf
    • https://cdn.shopify.com/s/files/1/0459/8697/1815/files/86468561426.pdf
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/95310452853.pdf
    • https://cdn.shopify.com/s/files/1/0431/1790/4033/files/rojawoxegelakegedubeme.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/31023202271.pdf
    • https://static.usrfiles.com/ugd/b8c837_03e43f3c253b4dedb96b00dbd9981e3e.pdf
    • https://static.usrfiles.com/ugd/b8c837_fef08631cb184895a3de57d13cc79efe.pdf
    • https://static.usrfiles.com/ugd/b8c837_24701f51696246a39130affad968ae1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d1145e8a3264e6b93c0dce3e7f1780e.pdf
    • https://static.usrfiles.com/ugd/b8c837_f4bf6b409ea74fed8cf0887e40321912.pdf
    • https://static.usrfiles.com/ugd/b8c837_74942d65a4a642b8b780e8b884f61fd6.pdf
    • https://static.usrfiles.com/ugd/b8c837_a070c81b71a24ae6b21dd10e15ed75aa.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_off000066ea.bin
91bb20d34a0f0c56a323a0337e1b45b87cbe061d529ef5599006e43f91cb6eeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66EA 5120 bytes
font_01_sfnt_off0000785c.bin
9a286c5ee42ce80c7d97c8d19ab728c8e1810d3189eadcd58c849b4821bab57f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x785C 9896 bytes

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