Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbd09e2bf0e9b733…

MALICIOUS

PDF

38.4 KB Created: 2020-08-09 14:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 026ffb9a15870e0b845f294f848ee7a7 SHA-1: 36648c90f261fe5c30e715d5227dce85e82b8bf6 SHA-256: cbd09e2bf0e9b73382a8bb9d9ee3ee59f024804423078a6cccc69659345cb5d1
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the same search query as the malicious URL, reinforcing the lure.

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.com/pify?keyword=bhagavad+gita+as+it+is+pdf+iskcon+desire+tree
    • http://files.upwellings.com/uploads/1/3/1/6/131607174/c3eb020e.pdf
    • http://files.theheartofheatherworley.com/uploads/1/3/1/8/131856247/392cffa565be.pdf
    • http://files.nashvilleweaverwedding.com/uploads/1/3/1/0/131070374/biredap.pdf
    • http://files.rachelsvineyardtucson.org/uploads/1/3/1/3/131383664/0714680.pdf
    • http://files.jorellmelendezbadillo.com/uploads/1/3/0/9/130969986/rozibagog_nulisudadavirof_joruderakivo_xevunekawur.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22945880436.pdf
    • https://cdn.shopify.com/s/files/1/0436/4081/5774/files/71268585189.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1162/files/jiwax.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdf
    • https://cdn.shopify.com/s/files/1/0432/3108/4708/files/pajej.pdf
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/raxepeda.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/nemelokudaw.pdf
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/sorudekasavugumidogatonib.pdf
    • https://cdn.shopify.com/s/files/1/0431/4431/5029/files/sexagugerexokijumapiz.pdf
    • https://cdn.shopify.com/s/files/1/0436/2086/0064/files/3431111626.pdf
    • https://cdn.shopify.com/s/files/1/0433/5140/8799/files/73922329300.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0861/files/19931072651.pdf
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/files/24445289624.pdf
    • https://cdn.shopify.com/s/files/1/0427/5693/1751/files/69678959315.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_off00005834.bin
832a3abe4257ce81f5e9331e34b414eb640c46c39622dba327625cad7b752eea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5834 5556 bytes
font_01_sfnt_off00006b29.bin
fdbbb035209e50a2636f33115ada09d69ab24ebb6e10418dee8d3976f16e63e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B29 9644 bytes

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