Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1b763e225487b23…

MALICIOUS

PDF

46.4 KB Created: 2020-08-29 21:41:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fbf4582784fc30e350580794be94aa9 SHA-1: 04cdf66a8b166959eb81e1883e95de76907685fb SHA-256: d1b763e225487b232df8e191a861dadc039473a73277faaf2364b44206ff7596
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous links, including one to 'ttraff.com', suggests a malicious intent, possibly related to SEO manipulation or directing users to harmful content. The file was generated by wkhtmltopdf, which can be used to create PDFs from web content.

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/wix?keyword=bz2+tar+unrecognized+archive+format
    • https://cdn.shopify.com/s/files/1/0431/8298/1278/files/sofinutikonetosuviwaseson.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/16334421943.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66691602327.pdf
    • https://cdn.shopify.com/s/files/1/0437/0546/7035/files/31768952833.pdf
    • https://cdn.shopify.com/s/files/1/0439/9942/8766/files/53562094357.pdf
    • https://cdn.shopify.com/s/files/1/0439/3045/2123/files/xaxilojem.pdf
    • https://cdn.shopify.com/s/files/1/0434/1815/7221/files/pefimuwafodujepe.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/25340902764.pdf
    • https://cdn.shopify.com/s/files/1/0440/5359/4277/files/anthropometric_assessment.pdf
    • https://static.usrfiles.com/ugd/b8c837_acb377122f174942975dd9f44d648a55.pdf
    • https://static.usrfiles.com/ugd/b42fd6_b23fa4e8f30a47a0a6b0bb29ddefc1ba.pdf
    • https://static.usrfiles.com/ugd/b8c837_b830d38f1a4344fc956e4ca7ad36a12a.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffda8f7cd92a40f38722fdf2945ddf2a.pdf
    • https://static.usrfiles.com/ugd/b8c837_448ec3f79e474b6ca43ac27f3f374d1f.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b85c4984ff244058e65dd367f31e851.pdf
    • https://static.usrfiles.com/ugd/5ed537_7d29c9a7395f4ed3b9f6a51b9b16a186.pdf
    • https://static.usrfiles.com/ugd/4826f5_cf5d4686d4e6408e8f7dc5ef5a5b8ccf.pdf
    • https://static.usrfiles.com/ugd/b8c837_fa43847652b8432c94fa547f8ebc3882.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ec8654f047b474196717cf639bc79e3.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_off000074bb.bin
b93f660ad6eed81900b5aa2a951588e1d3057ef12aced27b0a3f3c0d8f240d1b
pdf-font-stream PDF embedded font (sfnt) at offset 0x74BB 5516 bytes
font_01_sfnt_off00008754.bin
4057f71ce8c0b19e15f88601d7faed6930b3beff69a79ef33abb6c71d451e58b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8754 10932 bytes