Malicious PDF — malware analysis report

Static analysis result for SHA-256 c99ceb1bd5dd5b72…

MALICIOUS

PDF

54.0 KB Created: 2020-09-07 05:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 849d4b13db626ab84c9cd813c3075d74 SHA-1: 27965e04d6f0b139f2ac00282dbb0d43dc9feac8 SHA-256: c99ceb1bd5dd5b72bba6fdffd8a515de49be43ce90a1f4a77d99433f41365f22
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text that appears to be a lure for a corporate report, and the embedded URL is also present within this obfuscated content. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a link farm or redirection strategy.

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.me/wix?keyword=corporate+office+properties+trust+annual+report+2018
    • https://cdn.shopify.com/s/files/1/0466/3027/3189/files/jobusomisedivux.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7396/files/remove_blank_page_in_ssrs.pdf
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/xovex.pdf
    • https://cdn.shopify.com/s/files/1/0429/4869/0076/files/81716212719.pdf
    • https://static.usrfiles.com/ugd/a07927_03e1a2bf8964424ab0d3eea6523e5ece.pdf
    • https://static.usrfiles.com/ugd/6a4619_4ba8bdfe9d244a248683a6cdeab2e8d3.pdf
    • https://static.usrfiles.com/ugd/5b9a87_b610515fde7240f7b85688994fbe8e4e.pdf
    • https://cdn.shopify.com/s/files/1/0435/2940/4567/files/noxidate.pdf
    • https://cdn.shopify.com/s/files/1/0430/3601/6803/files/dobejivavokatowesekepu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/lupajovumufa.pdf
    • https://static.usrfiles.com/ugd/762c1a_c4f1f7e3852744c09867f8e3616d5548.pdf
    • https://static.usrfiles.com/ugd/60933b_6ce8993682144ac08d0c81124fcfe499.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_off00008cd9.bin
1b8d76926a71c9e892f06abd859bf2cf93584587fb5e14ce34bb08be30250454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD9 5436 bytes
font_01_sfnt_off00009f5e.bin
169773bf8311b6d84e21a47731bff25b356a36a8b645891c98ea587f6d7bf5fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F5E 13756 bytes

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