Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6187155717149cc…

MALICIOUS

PDF

49.0 KB Created: 2020-08-09 21:49:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ca719c4ca90cb9dc4007ade64f7da36 SHA-1: 080cbd4140f10e3e88de76823c97dd5703206cf5 SHA-256: c6187155717149cc5ad6db3e2b06f39c465939761e06022d14a07f9b1ec224a0
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=el+alquimista+coelho+pdf+gratis', which is likely intended to lead the user to malicious content. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, including 'https://cdn.shopify.com/s/files/1/0430/0672/2211/files/dr._collins_pcat_book.pdf', suggesting an attempt to distribute or mask malicious destinations.

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=el+alquimista+coelho+pdf+gratis
    • http://files.veglier.com/uploads/1/3/1/3/131398447/5017441.pdf
    • http://files.cpatrickproctor.com/uploads/1/3/1/3/131380546/vatedusejuvematotav.pdf
    • http://files.briannaholt.com/uploads/1/3/1/6/131636769/jefaturelav-fuwexanino-zotarutozimosib.pdf
    • https://cdn.shopify.com/s/files/1/0430/0672/2211/files/dr._collins_pcat_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/8585/6919/files/10136694419.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0398/files/23253822961.pdf
    • https://cdn.shopify.com/s/files/1/0445/7309/8143/files/sonic_pi_songs.pdf
    • https://cdn.shopify.com/s/files/1/0440/1663/1973/files/juwefulapoxefetopuni.pdf
    • https://cdn.shopify.com/s/files/1/0429/1300/5724/files/comment_installer_une_camra_de_surveillance_wifi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9799/5944/files/the_binding_of_isaac_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3018/files/55650011263.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8190/files/7854405828.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11286786524.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8890/files/7483543925.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_off00007e8c.bin
43d846cc2ad661f31cde49308bd2f047946ba7f7b60d896d067dae626f860638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8C 5652 bytes
font_01_sfnt_off0000919d.bin
0a4f676add2da40ba5bf80c455559bb3081006a94ec206671944d12687f93502		 pdf-font-stream PDF embedded font (sfnt) at offset 0x919D 11204 bytes

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