Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e8c7f36c3ceb8e…

MALICIOUS

PDF

44.4 KB Created: 2020-09-12 09:45:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49f68753ec1eb2a8232ee40463a8f1da SHA-1: b85e8de7f4ea522972862b01e41c96c5b5ae9a43 SHA-256: c6e8c7f36c3ceb8eab2550c8443db7dd3d380676e5db4a1908a5bf23f4bb7842
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to suspicious domains. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' indicate that these links are intended to redirect users to malicious infrastructure. The document body text, though partially corrupted, contains keywords like 'ctet 2019 form fill' and the malicious URL 'https://ttraff.club/wix?keyword=ctet+2019+form+fill', suggesting a phishing or scam lure.

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=ctet+2019+form+fill
    • http://fagozikut.noahsarkquarryville.com/uploads/1/3/1/8/131857252/c1c42bbe12d9.pdf
    • http://nixoxow.deluxeredux.com/uploads/1/3/1/4/131409926/ruwit_gizesitenunado_bamajufi_roruxage.pdf
    • http://files.mrk9inc.org/uploads/1/3/0/7/130740257/90cd5.pdf
    • http://files.foosie.store/uploads/1/3/0/9/130969654/sokusudekagajuxinimo.pdf
    • https://static.usrfiles.com/ugd/4117a9_8e64f3b3199c42f1859c0692ef4a950f.pdf
    • https://static.usrfiles.com/ugd/8aba0c_fe26b5f8fd094ba29552155b1f576cff.pdf
    • https://static.usrfiles.com/ugd/2ca09c_b1ba852a81e74a1fbf4ab80769993c41.pdf
    • https://static.usrfiles.com/ugd/c1615c_fdb152ed1e7b42f5b7714a0eee641c83.pdf
    • https://static.usrfiles.com/ugd/d38238_76da3044935448c1a187eb0aa5cf65c9.pdf
    • https://static.usrfiles.com/ugd/74e9cf_210c9e8203ba4c19b34faf25f6e4d816.pdf
    • https://static.usrfiles.com/ugd/b8c837_e83e3481299b4288ad3cabdcf6e33d37.pdf
    • https://cdn.shopify.com/s/files/1/0440/0958/6853/files/sazejogalajusajijemufaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/7176/5656/files/69254305347.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4658/files/30706040333.pdf
    • https://cdn.shopify.com/s/files/1/0438/4695/9261/files/puwifufumenaxetegamowetu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/7881723249.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000641d.bin
6a3ed02b8e55b153f3303732b630a47035d9f14efbb1dc3af89e3d26d08f08cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x641D 4712 bytes
font_01_sfnt_off00007425.bin
c238c9a806552d5c5027924a79f496342231b7054ebf8208b8c68579e3419205
pdf-font-stream PDF embedded font (sfnt) at offset 0x7425 10312 bytes
font_02_sfnt_off00009719.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x9719 4324 bytes