Malicious PDF — malware analysis report

Static analysis result for SHA-256 db5a76e429871c5c…

MALICIOUS

PDF

41.6 KB Created: 2020-08-29 20:58:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b2f7f2d1e5fcd74b91dea6d3c6be213 SHA-1: 020ac2c0ee80db5c7998b69de346a4ee9319e41b SHA-256: db5a76e429871c5cd4a1d0bc5d301ba6ae38bbe796a86139bd2a691ab110f69c
150 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains a large number of embedded links. One of these links, https://ttraff.cc/wix?keyword=love+you+libro+trilogia, points to known malicious redirector infrastructure. The document body contains garbled text and embedded URLs, suggesting it is designed to lure users into clicking malicious links, likely for phishing or malware distribution.

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=love+you+libro+trilogia
    • https://static.usrfiles.com/ugd/384ea4_4a48f22e836444dca2cda8177e5c6fe8.pdf
    • https://static.usrfiles.com/ugd/b8c837_98fea656ce6c43d6b8e9ac8ae14e106f.pdf
    • https://static.usrfiles.com/ugd/b8c837_5784fc09946c43cf9efc5ff985258230.pdf
    • https://static.usrfiles.com/ugd/5b9a87_f5b794a645134deda8a5e0d2e97623e6.pdf
    • https://cdn.shopify.com/s/files/1/0439/5152/1947/files/edit_adobe_acrobat_x_pro.pdf
    • https://cdn.shopify.com/s/files/1/0438/1078/3394/files/carbonation_chart.pdf
    • https://cdn.shopify.com/s/files/1/0467/5190/8003/files/.pdf
    • https://cdn.shopify.com/s/files/1/0462/3925/2631/files/kerotigolimok.pdf
    • https://cdn.shopify.com/s/files/1/0432/0277/3156/files/42814509609.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/importance_of_aseptic_technique_in_microbiology.pdf
    • https://cdn.shopify.com/s/files/1/0428/0965/5462/files/39297137683.pdf
    • https://cdn.shopify.com/s/files/1/0430/1606/1091/files/gapezunaragonadasinito.pdf
    • https://cdn.shopify.com/s/files/1/0430/9857/0909/files/spreadsheet_compare_microsoft.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8239/files/rixapagofikodafekaza.pdf
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/terixagatoleveb.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_off00006002.bin
bbec60c9acc0bc9c348c476f1bf334b0d387ef7eef38a3c2a09e0906cff49881		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6002 4916 bytes
font_01_sfnt_off000070e4.bin
431890b9f849d5465dc69cd9a68ce4286566f2a4e6eb8128508abc5ce4c54f64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70E4 12624 bytes

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