Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4a01484bfa88375…

MALICIOUS

PDF

39.9 KB Created: 2020-09-07 12:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ea49657005a5b6c1671ad9f9be5247f SHA-1: bacd5617426ad3bc6e82aab01b51672d94309bc3 SHA-256: a4a01484bfa883758cbe40d07f5e05464bba04445e1f8253ae3077f31b0d5726
128 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.link/wix?keyword=kendo+editor+template+validation'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including 'https://cdn.shopify.com/s/files/1/0431/4179/1895/files/sukeninozut.pdf'. The presence of a 'download button' heuristic suggests a social engineering lure to encourage user interaction with the malicious link.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/wix?keyword=kendo+editor+template+validation
    • https://cdn.shopify.com/s/files/1/0431/4179/1895/files/sukeninozut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tokon.pdf
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/24026297374.pdf
    • https://cdn.shopify.com/s/files/1/0440/5267/6773/files/lobejaxofegiwa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3848/2332/files/new_hollywood_movie_tamil_tamilrockers.pdf
    • https://static.usrfiles.com/ugd/8b97dd_60543684864c4c46a9c08b853cd2cfc6.pdf
    • https://static.usrfiles.com/ugd/b8c837_98506268603e48a28eca9bdc54a1166a.pdf
    • https://static.usrfiles.com/ugd/d4da64_5e79c1d8f5a8451db12bd438cbd805b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_5fd98ab8379b47ddb5271056b0ae102f.pdf
    • https://static.usrfiles.com/ugd/221eaa_39d23dc19f384597bc4cd15b9a0d854c.pdf
    • https://static.usrfiles.com/ugd/b8c837_f503b5c295b648b19252197c58d0108e.pdf
    • https://static.usrfiles.com/ugd/69695d_d509d04fc3594f529a5cdf664b22742a.pdf
    • https://cdn.shopify.com/s/files/1/0437/7752/3873/files/fisher_paykel_dryer_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/2841/3607/files/verexexirukutap.pdf
    • https://cdn.shopify.com/s/files/1/0431/3477/9553/files/vsepr_theory_quiz.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_off00005fd7.bin
243ed9c9db876ef9d4bdbe1a83d3811401c66218bc6b76b010d27d8abe53f61b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD7 4956 bytes
font_01_sfnt_off0000709f.bin
18aaae7ef69ca99c501f9121334731591b64c3caee64a05f36b4376084a71557
pdf-font-stream PDF embedded font (sfnt) at offset 0x709F 9948 bytes