Malicious PDF — malware analysis report

Static analysis result for SHA-256 45bb7bb91b325174…

MALICIOUS

PDF

40.9 KB Created: 2020-08-01 22:12:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e5ccf4b78bdf02979ca3f0d53bba580 SHA-1: 23af5c731a05e567ecfcb6dca407005d190fe5ef SHA-256: 45bb7bb91b325174cb9b8e99401830973f35d803bc2f825698dff55ee1ab4e44
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Ritz carlton employee handbook pdf' and a URL pointing to a redirector. This suggests a phishing attempt to lure users to malicious content.

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=ritz+carlton+employee+handbook+pdf
    • http://files.oharaconsulting.ca/uploads/1/3/2/6/132696171/zufipa.pdf
    • http://files.english-language-arts.com/uploads/1/3/1/6/131607131/pesoguw.pdf
    • http://files.cowan-construction.com/uploads/1/3/0/8/130813511/4695dc2c60c17.pdf
    • https://cdn.shopify.com/s/files/1/0430/1350/5185/files/noferobepijebofeduluzi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3170/files/enterprise_sim_pin_service.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/rujaluwowosamisikujowaxa.pdf
    • https://cdn.shopify.com/s/files/1/0438/1271/6701/files/4477314532.pdf
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/kufuxemuzopozibuxeteximo.pdf
    • https://cdn.shopify.com/s/files/1/0440/7656/4630/files/dixofajegani.pdf
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/fozupiloj.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/46584906047.pdf
    • https://cdn.shopify.com/s/files/1/0431/4310/2613/files/wunuviwurikibikesopa.pdf
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/76295002038.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/78458855440.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_off00006087.bin
0086172834cc81de0d045d64bdb04554283a30b5cbc4ece7c63c3a2c8ddc9eda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6087 5580 bytes
font_01_sfnt_off0000736a.bin
75bdef383b8df45867640d728062802b149b9c7973efa82341a2b9aea9d384f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736A 10520 bytes

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