Malicious PDF — malware analysis report

Static analysis result for SHA-256 212534133b928624…

MALICIOUS

PDF

69.7 KB Created: 2020-08-26 10:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bf1c36e7732ba9cc15a81f91480413f SHA-1: 36822d0b626ea347e455c07bc91385b466264586 SHA-256: 212534133b92862425f91b4f846691810f4cf77976c31b52e38adf25e693e8e0
120 Risk Score

Malware Insights

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

The PDF was identified as malicious due to its inclusion of a link farm pointing to known malicious redirector infrastructure. The primary malicious URL is https://ttraff.cc/pify?keyword=they+cage+the+animals+at+night+summary. The document body contains obfuscated text and references to wkhtmltopdf, suggesting it was programmatically generated. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the final malicious destination or for SEO manipulation to attract victims.

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/pify?keyword=they+cage+the+animals+at+night+summary
    • http://dunakojeg.artisan-creative.com/uploads/1/3/2/6/132695278/petapapawoxegenazen.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/50606583516.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/80070522754.pdf
    • https://cdn.shopify.com/s/files/1/0437/6556/3549/files/nomenclature_of_carboxylic_acid_derivatives.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/89513037224.pdf
    • https://cdn.shopify.com/s/files/1/0432/2246/6727/files/17371680636.pdf
    • https://cdn.shopify.com/s/files/1/0451/1966/8377/files/advanced_rar_repair_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0430/2707/1130/files/zizolavimove.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/kevuzu.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/16006925189.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_off0000d521.bin
7f0ad5851f92dd996f337058c1916f4ec0f0261a683221b4bc9f1d759ef1aae1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD521 5264 bytes
font_01_sfnt_off0000e6da.bin
60368d6ca0510be3b1e641302385ae12c4884d4d734a067b73421e6f7ad9f149		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6DA 10156 bytes

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