Malicious PDF — malware analysis report

Static analysis result for SHA-256 414a93afed93e3f6…

MALICIOUS

PDF

35.6 KB Created: 2020-08-31 04:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a06013b722245b7a7a29a2d308f371f SHA-1: df766ba1b0dd94f325e0d3f7e4718ea0c6dd163c SHA-256: 414a93afed93e3f6448515b05946d3c7fff726ae57afd1c71defccba47959592
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/wix?keyword=we+the+people+11th+edition+pdf+free`. This indicates a social engineering lure, likely a phishing attempt disguised as a free PDF download. The document body also contains this URL and numerous other links to PDF files, consistent with a link farm or SEO poisoning tactic. No scripts were extracted, but the primary attack pattern is clear: user interaction with a malicious link.

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/wix?keyword=we+the+people+11th+edition+pdf+free
    • https://static.usrfiles.com/ugd/9b5f63_9b056e80ab45467d8b1427cac4a734e6.pdf
    • https://static.usrfiles.com/ugd/be19e1_de42bef6ee734f4385e6c8546bb41b4c.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_6768f84b99f04752abe3aaafc04134d0.pdf
    • https://static.usrfiles.com/ugd/76de1a_38516652756a4f3abcab83898bb158fa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6975/0944/files/19433588098.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/xutiduri.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fd77c42eef24774887556e184ab81f6.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e05623e3ceb464f836ccff069055db1.pdf
    • https://static.usrfiles.com/ugd/b972d5_13801ed8a75c41798a78b88c0237cc11.pdf
    • https://cdn.shopify.com/s/files/1/0434/0501/7253/files/41666737114.pdf
    • https://cdn.shopify.com/s/files/1/0437/3427/0101/files/anemia_falciforme_anales_de_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0440/2675/7270/files/75834484180.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_off00005070.bin
d18cc2da1a7aedb65a1e7e50d0b5b6a8a457ab2fc7c42f5b4442889b69bee522		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5070 4804 bytes
font_01_sfnt_off000060d5.bin
818754cddfb03c0acf44f3acdbee9f07b1609341b230f5f61db538d78e80fdff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D5 9660 bytes

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