Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbb72e6db86bcc7a…

MALICIOUS

PDF

40.1 KB Created: 2020-08-18 23:28:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79a4a102612bba4d4ba76692e51ec7d0 SHA-1: a273304a9327a92857564f93e9857d41b4e28159 SHA-256: bbb72e6db86bcc7a55c99e23c8828104f61329cc3aa8de1dd85b7890d1b7f53e
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains the same URL, suggesting a social engineering lure to trick users into downloading potentially malicious content. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on Shopify, likely to improve search engine ranking for 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.com/pify?keyword=net+speed+monitor++for+windows+10
    • http://rawusibuk.moodmetals.com/uploads/1/3/0/7/130738970/da14871556.pdf
    • https://cdn.shopify.com/s/files/1/0431/2144/2965/files/java_programming_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/tejevola.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/54237119512.pdf
    • https://cdn.shopify.com/s/files/1/0431/6646/6202/files/28714304647.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5738/files/fezotitev.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/rolojexokelosulez.pdf
    • https://cdn.shopify.com/s/files/1/0429/6284/5859/files/28889874187.pdf
    • https://cdn.shopify.com/s/files/1/0434/1376/6296/files/bufamevazejedutesuzofilum.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_off00005939.bin
ff0d2460d9c4b87045b868b10042f92c03672606d04ba31221267badacd61670		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5939 5200 bytes
font_01_sfnt_off00006af2.bin
d1a447ca4e63270c61e96458c83533ad03b59faa547779f23a462f3526d50f74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF2 13944 bytes

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