Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6ac31621648ece6…

MALICIOUS

PDF

53.5 KB Created: 2020-09-01 08:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7746f60e40683150312433884183fcc5 SHA-1: 8dc45d5119e41cf2bd6e695e62e45c6d190774f4 SHA-256: c6ac31621648ece6c2ce61459bbbba5c07c175a786ef881a67bbd308e39b4e9f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=angular+material+autocomplete+custom+template'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains references to the malicious URL and other benign-looking PDF files hosted on Shopify. This suggests a phishing or redirection attempt to a malicious site.

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/wix?keyword=angular+material+autocomplete+custom+template
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/88740528902.pdf
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/50437132722.pdf
    • https://cdn.shopify.com/s/files/1/0431/2324/5207/files/42680735947.pdf
    • https://static.usrfiles.com/ugd/b910ae_4c3fb3e199274c1b9b407028e7f24e34.pdf
    • https://static.usrfiles.com/ugd/99afdc_fd614f97b8fc484f86554e9b3c812c6d.pdf
    • https://static.usrfiles.com/ugd/96768c_6eb05375bcae415eadf150bfb634dfd0.pdf
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/kuwopuvawopefet.pdf
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/tutobebeko.pdf
    • https://cdn.shopify.com/s/files/1/0429/2768/5788/files/88784202247.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/53892987580.pdf
    • https://cdn.shopify.com/s/files/1/0428/0808/2599/files/55778620791.pdf
    • https://static.usrfiles.com/ugd/15cd4d_70f4dfd9f8264be8b3c8fd847403d49f.pdf
    • https://static.usrfiles.com/ugd/217d68_99422a63e1514bf28b3c201d6efa25af.pdf
    • https://static.usrfiles.com/ugd/1be480_78fbe69111604ad3ba2f5d268e3659b6.pdf
    • https://static.usrfiles.com/ugd/1b8612_2336faff9d9e4c099b0016073e96517b.pdf
    • https://static.usrfiles.com/ugd/b8c837_3705223500e5488a8416facf6a26b62b.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_off00007fa2.bin
219e21e851b0634d99be17553d619879bd9679a7c8ed323204b2772780047adc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA2 5244 bytes
font_01_sfnt_off00009166.bin
551ab870a13b20aae5cc5ba1f3d8ea02f1bbc666d51181038487aa8c98cd2c42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9166 17024 bytes

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