Malicious PDF — malware analysis report

Static analysis result for SHA-256 36b47d6e760d1a6e…

MALICIOUS

PDF

41.1 KB Created: 2020-08-10 04:44:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65e8c0ea89b8ed0a7bc3c1acfaf388f2 SHA-1: 057e39467be18e99cb559c509db119bde6a4ba47 SHA-256: 36b47d6e760d1a6ea4ac4b2a26b630ee6554c741d58b02f226f057537a753883
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though partially corrupted, contains text and URLs that suggest a lure to a malicious site. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a link to known malicious infrastructure, and the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on Shopify. The primary malicious IOC is the redirector URL.

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=cantos+camino+neocatecumenal+pdf
    • http://files.customk9s.com/uploads/1/3/1/1/131164236/lazapiwo_kezapulakabogo.pdf
    • http://files.sparkycarpetcleaning.com/uploads/1/3/1/6/131637273/6492353.pdf
    • http://files.ashwoodcarpentryjoinery.co.uk/uploads/1/3/1/3/131383771/pavijeporixu.pdf
    • http://denasuw.yonahayin.com/uploads/1/3/0/7/130775734/4111949.pdf
    • http://files.mipostcards.com/uploads/1/3/1/3/131381480/mokozufunesip.pdf
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/brisbane_suburbs_map.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/22565403051.pdf
    • https://cdn.shopify.com/s/files/1/0432/7197/9172/files/rumujakavidezamelexudutez.pdf
    • https://cdn.shopify.com/s/files/1/0429/3971/1655/files/wusitigiwa.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/cantoral_liturgico_con_acordes.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/absorption_chiller_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0432/7365/0334/files/11th_zoology_book_in_tamil_medium.pdf
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/nitererikefop.pdf
    • https://cdn.shopify.com/s/files/1/0431/7764/0093/files/7266505696.pdf
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/jawaxowakegalet.pdf
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/50625603413.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_off000063c1.bin
af2f3636a2714f8cb352ad2430f58b04a6879a3d2f01a5228dc6e2c6ed8b0b51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C1 5108 bytes
font_01_sfnt_off00007511.bin
2073e602062deb88b20c83d4d427d441baa30aaa2431e0a5fc725a75fc3d2fd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7511 10024 bytes

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