Malicious PDF — malware analysis report

Static analysis result for SHA-256 2125729c5164dc59…

MALICIOUS

PDF

43.4 KB Created: 2020-09-01 06:15:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 867959b265e75b511865e81afda628d6 SHA-1: 371255438b832adea7d69c8f4c822a50e5df6f2e SHA-256: 2125729c5164dc592944f075e3cf1b584a0e2dabf46664c5f57a3a84a4663d5b
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The document body, though heavily obfuscated, contains text related to a 'technical theatre resume template' and a URL that appears to be a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, one of which is identified as a malicious redirector.

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/pify?keyword=technical+theatre+resume+template
    • https://static.usrfiles.com/ugd/3aee12_93d34499ebbd418589ba49618ab32902.pdf
    • https://static.usrfiles.com/ugd/b8c837_4acb61775aba4814b8ffe6d21a0a440a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d25d82c8fd9f4ffeb8bf7ae5e9b12481.pdf
    • https://static.usrfiles.com/ugd/dad90e_5968ec3315144f44a7f1134b1b8b01c0.pdf
    • https://static.usrfiles.com/ugd/278743_c1c528cc7c8941ba88d57a0835db26a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f942ffbf94a42d18c802cc273553ebc.pdf
    • https://static.usrfiles.com/ugd/9d66c7_f3476e1bdadd4b4a938f0cf2a7f11bdb.pdf
    • https://cdn.shopify.com/s/files/1/0428/3885/1751/files/4540139099.pdf
    • https://cdn.shopify.com/s/files/1/0433/8276/7779/files/vukagopo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/9947266954.pdf
    • https://cdn.shopify.com/s/files/1/0435/3074/8072/files/panejoveduginefuvuzaga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://static.usrfiles.com/ugd/74e905_fff94d03a7824c3ebe3b9e9ce700376b.pdf
    • https://static.usrfiles.com/ugd/aff7ca_6058da639a0a4e0783432f3d6bf8d41d.pdf
    • https://static.usrfiles.com/ugd/b8c837_462a32b997ce4dbf8f8589a801444202.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_off00006d22.bin
d15ec1b3caa3f0d299c8eb3327e89f433baf4d38b7ac259410e2c7de9133314d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D22 5124 bytes
font_01_sfnt_off00007e62.bin
db39838d966f57b5ed9ee119ae04d74bacac50968dbb68e6be56f347dfd88817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E62 10116 bytes

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