Malicious PDF — malware analysis report

Static analysis result for SHA-256 53b08ace03b620cc…

MALICIOUS

PDF

44.2 KB Created: 2020-08-28 04:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7223df7282bd5374c4a34d7b3b925f89 SHA-1: 00dd46eb41c2a4390a1439f4050aab3f46629f10 SHA-256: 53b08ace03b620cc90b035dc59d846feeef159add40615847c983849c9693fba
120 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, many of which point to a link farm designed to obscure the ultimate destination. One of the primary links, 'https://ttraff.cc/pify?keyword=formato+cuentas+t', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF files hosted on various domains, suggesting a phishing or redirection attempt.

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=formato+cuentas+t
    • http://files.sweetbasilhurst.com/uploads/1/3/1/4/131406518/pegupojivirox.pdf
    • http://futewixo.bluewatersinc.net/uploads/1/3/1/1/131164250/bitizusibif.pdf
    • https://cdn.shopify.com/s/files/1/0429/5757/0207/files/nice_guidelines_central_venous_catheters_infections.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/41487569585.pdf
    • https://cdn.shopify.com/s/files/1/0448/3593/0273/files/cch_chuyn_i_sang_nh.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gevuruliwineda.pdf
    • https://cdn.shopify.com/s/files/1/0433/9171/3443/files/crane_vending_machine.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/bharatha_rajyangam_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4942/5823/files/35240824064.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74098669839.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zizamazigunonafimav.pdf
    • https://cdn.shopify.com/s/files/1/0430/1714/2433/files/petamitare.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_off00005f7d.bin
64db10bd6e3f48d75a9e90155fb5787d8ead0bef083708d75a8a1d0e405ec4cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7D 4700 bytes
font_01_sfnt_off00006f48.bin
b1d5ddc214ef64756945cc287029997bfd2b71b7867e5ddff19a77034c289d39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F48 11540 bytes
font_02_sfnt_off000094e3.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94E3 4324 bytes

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