Malicious PDF — malware analysis report

Static analysis result for SHA-256 bae85fc5898ff873…

MALICIOUS

PDF

42.3 KB Created: 2020-08-02 07:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e4b0a3fae0517fd30605a2ccbd210be SHA-1: 3a1bb27dbb27be7a527222740feb80d5d59edddf SHA-256: bae85fc5898ff873b6271fc224e3f942542d470e133a9b1514df908eaf2729c9
120 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 directs to a known malicious redirector at 'ttraff.ru'. This indicates a link farm used to obscure the final destination, likely for phishing or scam purposes. The document body contains garbled text but includes the target URL and a reference to 'autohotkey auto click', suggesting a potential 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.ru/pify?keyword=autohotkey+auto+click
    • http://files.earringsandwhatever.com/uploads/1/3/0/7/130775143/1043602.pdf
    • http://files.golfwhitepath.com/uploads/1/3/1/4/131453036/145201.pdf
    • http://files.anjellyschick.com/uploads/1/3/0/8/130815026/xixexuwokimezu-fuboxoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1140/0102/files/71757598454.pdf
    • https://cdn.shopify.com/s/files/1/0431/4621/5584/files/dipobavujo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0804/0853/files/78680492015.pdf
    • https://cdn.shopify.com/s/files/1/0430/3038/0698/files/53222231448.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/50009182342.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/mapidi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4896/8100/files/zetojusexu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/ninudabukav.pdf
    • https://cdn.shopify.com/s/files/1/0430/3106/8823/files/40078319000.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0421/files/70660762990.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/disolenowilile.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.pdf
    • https://cdn.shopify.com/s/files/1/0431/8029/4298/files/gigoral.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_off0000674f.bin
f9f335564949006b57411f408b93104d32ffa4d56e2e52f54cc14c01d784ffd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x674F 4768 bytes
font_01_sfnt_off0000778f.bin
ad70646223897bf7696f755b81d7a20ecf801b4ae6dd2537fe49ced195b41bc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x778F 10848 bytes

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