Malicious PDF — malware analysis report

Static analysis result for SHA-256 2141dc3f7d1f41fe…

MALICIOUS

PDF

42.8 KB Created: 2020-08-29 17:36:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84018dc71afec9546f845a57d33c6d8d SHA-1: 4d72a1fd94eedb9393a5c80fa73fe96f2320b531 SHA-256: 2141dc3f7d1f41fe931617a3da8f1a9918ec495b5d1fa30d77776665df1aeefb
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, which points to a URL containing keywords related to a popular kitchen appliance manual. This suggests a social engineering lure. The document body also contains this URL and numerous other links hosted on Shopify, likely part of a link farm to improve SEO for malicious content. The primary malicious URL is ttraff.cc, which is known for redirecting to malicious sites.

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=nuwave+brio+10+quart+air+fryer+manual
    • https://cdn.shopify.com/s/files/1/0431/6587/6379/files/jevizul.pdf
    • https://cdn.shopify.com/s/files/1/0436/4235/5865/files/illinois_domestic_foreign_corporation_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/1430/7496/files/51423541564.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/javujoxojawobinufe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4721/4486/files/4794100327.pdf
    • https://cdn.shopify.com/s/files/1/0437/0753/1432/files/kumiga.pdf
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/zimikebotixegovab.pdf
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/gh3_cheats_wii.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7672/files/zipurijisipowabo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/31240996732.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_53b72036f51c49c89c5044554334ae68.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a988c4a4caa4cfc925df0dacb8e53b4.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0d3364034134d359eb31f41ffd4f906.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3adabb3da63441b94fc10baf91845ec.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e05.bin
5f8095b84fb06192ad7ba5f07ad76546a90eb535af26c3d446c318d7d1453021		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E05 5300 bytes
font_01_sfnt_off00006017.bin
13472a8fce70f00e2fd0c6ff8c1c75136965ccf0a6272b6b73584c4a2d04f266		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6017 15788 bytes
font_02_sfnt_off00009053.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9053 4324 bytes

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