Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f32ab9ea4f70f9…

MALICIOUS

PDF

57.3 KB Created: 2020-09-04 19:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56de5d73665c883021d0ec820c1d3516 SHA-1: 85fa0777b1761459fe1f602efffb617022c2ccd1 SHA-256: 93f32ab9ea4f70f99270f760fd973626350cce7bfc4e83e78e218ff2acd7f246
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=english+to+japanese+romaji+dictionary+free'. This indicates an attempt to direct users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, suggesting a broader campaign to distribute malicious content. No scripts were extracted from this sample, but the presence of the redirector and link farm heuristics strongly suggests a social engineering attack.

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.me/wix?keyword=english+to+japanese+romaji+dictionary+free
    • https://static.usrfiles.com/ugd/9ef0c3_adbb5ffa58604bec82db3a242aac57b7.pdf
    • https://static.usrfiles.com/ugd/b91566_61e098bd74d6474699d34f2c71a3adc3.pdf
    • https://static.usrfiles.com/ugd/cdb50c_1f193f06f3094aeeaaaf2050baa3511c.pdf
    • https://static.usrfiles.com/ugd/8f6098_f51f9391143d4847bd2f0a791c70cf7a.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_005a5b2e36df4d82a193ee9d858d8358.pdf
    • https://cdn.shopify.com/s/files/1/0459/2451/5989/files/95315398543.pdf
    • https://cdn.shopify.com/s/files/1/0433/5871/6055/files/99991690045.pdf
    • https://cdn.shopify.com/s/files/1/0462/8673/3473/files/service_catalogue_template_ppt_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6974/files/mezukezoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/murazonogowixim.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4090/files/munibuvitalasifid.pdf
    • https://cdn.shopify.com/s/files/1/0440/3740/6870/files/gravity_sara_bareilles_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/35502838099.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ed2.bin
81d5c90023fde0ab84da1d962454440589f29b72894c644a8c1d51a70e102992		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED2 8960 bytes
font_01_sfnt_off00007cb8.bin
0abf8760449829b7152f03b72c11446b4e6e53dce9251942fac8a3efe33ee050		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB8 5492 bytes
font_02_sfnt_off00008f4e.bin
9df917c095e0d4a413123815e4494e2098685782ceb005246f1f592c7b328b16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4E 10700 bytes
font_03_sfnt_off0000b410.bin
89427dc483e856da8ade8f703a595bc89c41a1df02c1abde5ad6e64370eab903		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB410 16116 bytes
font_04_sfnt_off0000c8ea.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EA 4324 bytes

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