Malicious PDF — malware analysis report

Static analysis result for SHA-256 c56a35a346b30914…

MALICIOUS

PDF

41.5 KB Created: 2020-08-30 02:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e1395332d900793bed7a1eb525c7387 SHA-1: e6c90386facbcc0ff6ee637691ae9b259bb2caa8 SHA-256: c56a35a346b30914d3996592f2db6b9b8e4c82943fe0a4169d6f87ed3e476f71
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, pointing to 'https://ttraff.com/wix?keyword=war+of+the+planets'. Additionally, it exhibits a PDF link farm, with numerous links to other PDFs hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL and a list of Shopify-hosted PDF links, reinforcing the lure mechanism. No scripts were extracted, and the primary malicious activity appears to be redirection to external 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/wix?keyword=war+of+the+planets
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/allotropic_forms_of_carbon_diamond.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/93253699823.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/guvovitomafaroker.pdf
    • https://cdn.shopify.com/s/files/1/0434/1052/2277/files/gupitekidejo.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5798/files/90559175717.pdf
    • https://cdn.shopify.com/s/files/1/0431/0056/9751/files/egyptian_gods_and_goddesses.pdf
    • https://static.usrfiles.com/ugd/15cd4d_e3a3292e23a74ad2865d2c208c5bca76.pdf
    • https://static.usrfiles.com/ugd/b8c837_169c9eff585f45d593665a06615ddecc.pdf
    • https://static.usrfiles.com/ugd/cc089a_7b7aeb8e9222414e873864cf815897ed.pdf
    • https://static.usrfiles.com/ugd/ce14f3_d84fa25f6cdf4632a8a8992d73556eac.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/67464403975.pdf
    • https://cdn.shopify.com/s/files/1/0443/1645/9164/files/23262490661.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdf
    • https://cdn.shopify.com/s/files/1/0428/3164/2780/files/48410754563.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/vaxolebuvalexokireluxusa.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_off00006528.bin
ff95c585963e701a5b28fef1c7d9a484834a655e30e2bb7c4684d3b62781ab1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6528 5000 bytes
font_01_sfnt_off0000762f.bin
a7baaddc36987cdc14267023acb84574ebe885bd73c76160dae3fb2d102e77da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762F 10280 bytes

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