Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd78d2fae1b023f3…

MALICIOUS

PDF

44.5 KB Created: 2020-09-07 15:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a3217bde82377594536a1e38f38ec4d SHA-1: c2939f69bec74b379239c981e9f00ff46b94b118 SHA-256: cd78d2fae1b023f3bad0750700dfc606e0ae3eead433e0d51de47fd4a8e6a43e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.club/wix?keyword=retribution+paladin+leveling+guide+classic+wow', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this malicious URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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.club/wix?keyword=retribution+paladin+leveling+guide+classic+wow
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/48839457863.pdf
    • https://cdn.shopify.com/s/files/1/0459/0714/8954/files/chainless_bicycle_project_report_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/lopizexuregudurepupo.pdf
    • https://cdn.shopify.com/s/files/1/0465/1991/0558/files/top_5_android_browsers_2019.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/formal_email_writing_samples.pdf
    • https://static.usrfiles.com/ugd/50988c_fd3425b26b644d26b72e121902355535.pdf
    • https://static.usrfiles.com/ugd/dba42a_225e798f7cce4381a3a9b1c805974c94.pdf
    • https://cdn.shopify.com/s/files/1/0428/0057/8723/files/xexilototavewiwijenuka.pdf
    • https://cdn.shopify.com/s/files/1/0449/8512/2984/files/angular_templateref_viewchild.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/invoker_skills_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/renufuzivurexike.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/zinobowavuveni.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd358dfc61e540668b4d35995bce5230.pdf
    • https://static.usrfiles.com/ugd/77941b_4ad3b41539094ab2a9b5164f15068f24.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_off00006fa3.bin
7155fa8e119a638d2e1d147e04709478abe04869e53a463517d78bcaac0e5eae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA3 5540 bytes
font_01_sfnt_off0000829b.bin
d4e1e1a90ce415f63240b53f0213a36d0e5662a32737f2bbafe7df327149afaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x829B 10128 bytes

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