Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5feb4fc8fe9efb…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 06:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89533bea8fa040e68fcd268b8b2de3df SHA-1: ba4612b8b797e952f8c0f72a271fc6209d5df9a7 SHA-256: dc5feb4fc8fe9efb6142e9eda32241908c442b35847e965b2e3feacf52ee8c87
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link farm with numerous external links, including one pointing to a known malicious redirector. The primary malicious URL is https://ttraff.cc/wb?keyword=guerin%20sportivo%20giugno%202019%20pdf. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware delivery. No scripts were extracted, limiting further analysis of the execution chain.

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/wb?keyword=guerin%20sportivo%20giugno%202019%20pdf
    • http://files.undertheirrelevance.com/uploads/1/3/0/7/130740458/gexizazunudepo.pdf
    • http://files.shopthirdculturebakery.com/uploads/1/3/2/6/132682048/deziku.pdf
    • http://files.partneringforsafety.com/uploads/1/3/1/1/131164160/5136947.pdf
    • https://cdn.shopify.com/s/files/1/0429/2699/7663/files/14347803441.pdf
    • https://cdn.shopify.com/s/files/1/0433/7182/3262/files/13381334602.pdf
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/wojologoxawe.pdf
    • https://cdn.shopify.com/s/files/1/0430/0115/1651/files/kesuxifodofekegar.pdf
    • https://cdn.shopify.com/s/files/1/0440/2305/4501/files/pazalekerotisa.pdf
    • https://cdn.shopify.com/s/files/1/0447/9080/8727/files/punjabi_alphabet_tracing_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/84974356469.pdf
    • https://cdn.shopify.com/s/files/1/0428/4373/4182/files/goduvafozemo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/broad_and_narrow_spectrum_antibiotics.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/89737263009.pdf
    • https://cdn.shopify.com/s/files/1/0440/5726/4280/files/nanije.pdf
    • https://cdn.shopify.com/s/files/1/0436/8669/0969/files/repukixipupawelirizezoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/tamukotozufajewepisefab.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_off000063d8.bin
320cb06d9fda568074653b4c850156a0fb113ae5091cbcdbf245fd4598dd5d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D8 5540 bytes
font_01_sfnt_off000076db.bin
218c688c14f33b5f4bedd3313084d6421fb136f67efd5ace22d502c67076503e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 11812 bytes

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