Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca51fe588a5b8422…

MALICIOUS

PDF

35.1 KB Created: 2020-08-22 02:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63127c50a75c1ab0257f93be215ce9ec SHA-1: ccd58e69f2abce8370dd9f2cc538f459fd6bafb2 SHA-256: ca51fe588a5b8422ff5f7681a40c2df04f0bf6c415e4c7e64fa5f5e113a358b5
120 Risk Score

Malware Insights

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

The PDF contains a mass link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the redirector URL. This suggests the PDF is designed to distribute malicious content or lead users to phishing sites.

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=aadukalam+movie+theme+music
    • http://silob.wlccrescue.org/uploads/1/3/0/7/130775274/2860896.pdf
    • http://files.parkhomecampaigner.org.uk/uploads/1/3/1/1/131163540/6be8bbbd3.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/susoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/2873/3352/files/soxazojumokedalirugofo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3128/1314/files/cartoon_comedy_video_3gp.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/81247064219.pdf
    • https://cdn.shopify.com/s/files/1/0439/7082/2302/files/btwin_riverside_500_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/0885/2117/files/kuwoxugoguzesajabunafalef.pdf
    • https://cdn.shopify.com/s/files/1/0432/9386/8187/files/juzodivezuvi.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/lil_durk_ghetto_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/62876511318.pdf
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/xodejezobewaj.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_off0000443b.bin
fe50a5462381b1d6c9f2e41fc57815b2e281cc7d3f980554b521509c2d4fb2dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x443B 5196 bytes
font_01_sfnt_off000055cd.bin
175dde3ad760e77c6e1718c985edfb4026c9fa89e7d87ad39909f86e2a5a3538		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55CD 13404 bytes

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