Malicious PDF — malware analysis report

Static analysis result for SHA-256 989b587ac4e67808…

MALICIOUS

PDF

39.0 KB Created: 2020-09-01 06:32:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b3384bc9dc81895993871371ae2659d SHA-1: 671b4d08722fc69cd484a9e9e80008942c08e5e4 SHA-256: 989b587ac4e678085723201439822a21fa6a068cfa20e7ac5ef1d8a20304ee22
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as a malicious redirector and a link farm. It contains numerous embedded links, with one pointing to a known malicious redirector at 'ttraff.club'. The document body, though heavily obfuscated, also contains this URL and other benign-looking PDF links hosted on Shopify, suggesting a tactic to disguise malicious intent within a large number of seemingly legitimate links. The primary attack pattern involves luring users to malicious sites via these links.

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=wavelet+transform+in+image+processing+matlab+code
    • https://cdn.shopify.com/s/files/1/0440/9986/2680/files/corsair_cx500_manual.pdf
    • https://cdn.shopify.com/s/files/1/0459/2451/5989/files/benchmark_para_pc.pdf
    • https://cdn.shopify.com/s/files/1/0429/8099/9321/files/gojage.pdf
    • https://cdn.shopify.com/s/files/1/0457/6237/9940/files/allowance_for_doubtful_accounts_balance_sheet_entry.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3974/files/scratch_1._4_for_windows_8.pdf
    • https://cdn.shopify.com/s/files/1/0433/8538/9212/files/78263339053.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/wofadatorunatejadujuguf.pdf
    • https://cdn.shopify.com/s/files/1/0429/7333/1609/files/62542400842.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/adobe_illustrator_fonts_pack.pdf
    • https://cdn.shopify.com/s/files/1/0435/4814/7867/files/zorewopojivafutol.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_7da13dd61c5d4c8a99048c82e920bb85.pdf
    • https://static.usrfiles.com/ugd/81d6a4_da103b34c85746409cc3f9d5702040a8.pdf
    • https://static.usrfiles.com/ugd/bf07b1_d7913b229c8c4a8ca3000d76e1759651.pdf
    • https://static.usrfiles.com/ugd/b80405_85e1fc7059f94c4193e4624e8390f6f5.pdf
    • https://static.usrfiles.com/ugd/7603ae_f8a276a6cd7149aaaa6a2ac7b9e893a1.pdf
    • https://static.usrfiles.com/ugd/173616_d676d07bedf14560880bef6bb7cd33e9.pdf
    • https://static.usrfiles.com/ugd/b8c837_784bfa14201d4a65a47962ecca116fc2.pdf
    • https://static.usrfiles.com/ugd/87a178_7b332080183b4edebbdbc40f01babad0.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_off000057e7.bin
8a0f3cee642bb043e4134ee79bc72b1fb2807a85d3003988cf34e7d18ecec428
pdf-font-stream PDF embedded font (sfnt) at offset 0x57E7 5688 bytes
font_01_sfnt_off00006b35.bin
dd2ba402e2245810e879bc96628a66a48e7dddfb6dc52f4675347cb540f166e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B35 10432 bytes