Malicious PDF — malware analysis report

Static analysis result for SHA-256 5776f4ef46fe79ad…

MALICIOUS

PDF

45.3 KB Created: 2020-08-06 01:35:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeb63231e1e16149d5511824cc42cf23 SHA-1: f8ecad412ce3d8c9930cda632973ef4274bf0384 SHA-256: 5776f4ef46fe79ad63ee4ca73fb6db6049ef45ceaede55ebcc1b5b85769f0b2d
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lure users to malicious content. The document body, though heavily obfuscated, contains text related to financial expenditures and includes the malicious URL. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation to distribute the malicious content.

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/pify?keyword=capital+and+revenue+expenditure+examples+pdf
    • http://files.heartofcoloradofiberartsguild.org/uploads/1/3/1/6/131607053/suwepuduf-kusew-fezanev-zewemufejew.pdf
    • http://files.bostonshoestoboots.com/uploads/1/3/0/9/130968960/kedemetakojigo.pdf
    • http://files.kankakeevalleycc.org/uploads/1/3/1/6/131636819/6298498.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kirojaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4336/files/pijubosena.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/74457714495.pdf
    • https://cdn.shopify.com/s/files/1/0437/1909/8522/files/62067512578.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/37342388731.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/ny_driver_s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0445/6900/2143/files/sas_70_reports.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/dajafopuwigeninedalelev.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2554/files/zoposeneje.pdf
    • https://cdn.shopify.com/s/files/1/0434/9201/6280/files/51932474405.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000659c.bin
8f0bf3e68fa3ce29edff5aa2d3ccd28870b69431d6f233c68e765f0588c7e002		 pdf-font-stream PDF embedded font (sfnt) at offset 0x659C 5112 bytes
font_01_sfnt_off000076e7.bin
9d18a4a96da1ff4b0e5e89ca89f74465cbff7b8e7e4cad393d8a83ba2074b706		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E7 10312 bytes
font_02_sfnt_off000099e6.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99E6 4324 bytes

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