Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0983fe8b871b12d…

MALICIOUS

PDF

71.7 KB Created: 2020-09-03 00:14:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96628b3577a09f186cec6ee1fe142b01 SHA-1: f95e0a37e7cc7cf33f8a7f9fe9c26e191f4dd4f8 SHA-256: e0983fe8b871b12dcf0118f52e48268011501d7faef7d4546926681f455d7b86
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=informe+de+auditoria+forense+peru'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the first identified as 'https://cdn.shopify.com/s/files/1/0431/2442/4853/files/18297571644.pdf'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to trick the user into visiting this malicious link.

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=informe+de+auditoria+forense+peru
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/18297571644.pdf
    • https://cdn.shopify.com/s/files/1/0432/7338/8190/files/jekolo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5608/7708/files/77237284069.pdf
    • https://cdn.shopify.com/s/files/1/0431/8806/0321/files/ryobi_4_cycle_trimmer.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8062/files/kamobibuxegirogalim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3939/9842/files/faliwurozufelegu.pdf
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/23109131733.pdf
    • https://cdn.shopify.com/s/files/1/0428/6929/3223/files/advanced_cardiac_life_support_download.pdf
    • https://static.usrfiles.com/ugd/8d0191_229e573e11ad435faf0c83dabb066b7e.pdf
    • https://static.usrfiles.com/ugd/c0a468_d0b12ab996af4af5975aad86fc36b722.pdf
    • https://static.usrfiles.com/ugd/8b49c6_9134d941266446ca94e4d8c6e9dacc90.pdf
    • https://static.usrfiles.com/ugd/bf0735_257a25f73fe3459e86a2005563e0284e.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_off0000d7ac.bin
ba16a65d19927160dd56f1d5d5d104c1d28fcb1ec483eb73ebeec38b525ab8f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AC 5092 bytes
font_01_sfnt_off0000e8e5.bin
d2f6e068476b6526f582dbaa08b7ce9ebbdb8e9ef9d3a118e21f7a981328f1c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E5 12792 bytes

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