Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d1d7ec08af3b84e…

MALICIOUS

PDF

56.8 KB Created: 2020-09-09 13:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02cbf8cf9d0632be0cf87ac40709b563 SHA-1: 0ec2f1261af7bc0b78754dcb8279b6edfad577aa SHA-256: 3d1d7ec08af3b84e47364c7f57506970646b24ac923ec00fec7bd015b0cae828
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=cbs+this+morning+saturday+former+hosts'. This indicates the document's primary purpose is to redirect users to a malicious site, likely for phishing or malware distribution. The presence of a large number of external PDF links, many hosted on Shopify, further suggests a link farm or SEO poisoning tactic to obscure the malicious destination. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=cbs+this+morning+saturday+former+hosts
    • https://cdn.shopify.com/s/files/1/0431/1308/7142/files/72676266971.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4307/files/83754829139.pdf
    • https://cdn.shopify.com/s/files/1/0432/3993/2067/files/ruzopapan.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3829/files/jasobudubofoj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16946396068.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19194700937.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/tavikozopu.pdf
    • https://static.usrfiles.com/ugd/e5412a_d4ac08c4375f423ca905906ccd159e0a.pdf
    • https://static.usrfiles.com/ugd/9ef1ea_ce8d87a304934007942203e10bac23f0.pdf
    • https://static.usrfiles.com/ugd/c8683e_275ee5dd2f8042ef9a3e95abf0971c58.pdf
    • https://static.usrfiles.com/ugd/ace02d_142ce402defb4390a06872a078dd4c0e.pdf
    • https://static.usrfiles.com/ugd/4f270c_2b10fc4836ea4a26aad0224be82f65ae.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_off00009fd2.bin
71b0e7cd0b3f107228c8f88e6f156777f9c7c7a2016a8234a3066e24328768c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD2 5436 bytes
font_01_sfnt_off0000b222.bin
2f245abfbca2eb01fc2494b1639d43bc40c3148f85f9be22afa01bb4591ebe94		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB222 10520 bytes

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