Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e5592705f0a933…

MALICIOUS

PDF

42.1 KB Created: 2020-08-04 19:26:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 44ce516972b3eeca05aeb1fae2f3741e SHA-1: 55d31a7371b2e56c97952628bee85a8ee16012da SHA-256: f5e5592705f0a933452776b55f2f0c23b46cdae596ecf0f58dec0289de8624cc
120 Risk Score

Malware Insights

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

The PDF contains a link farm, directing users to numerous external PDF files, with the primary link leading to a known malicious redirector. The document body, though corrupted, contains text related to 'types of bearings and uses pdf' and mentions wkhtmltopdf, suggesting a lure to disguise malicious redirection. The embedded links are designed to obscure the malicious destination.

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=types+of+bearings+and+uses+pdf
    • http://files.globalheartsanctuary.com/uploads/1/3/1/4/131452938/9579482.pdf
    • http://files.supervisedvisitationtraining.com/uploads/1/3/0/7/130739070/688c1714.pdf
    • http://files.joysantamarina.com/uploads/1/3/2/8/132814146/wurudawoxufup-wobofinuvefi-dilazubanamab.pdf
    • http://files.frostedfantasiescakes.com/uploads/1/3/0/8/130873715/2157208.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8333/files/26793863439.pdf
    • https://cdn.shopify.com/s/files/1/0433/8135/8753/files/2481792642.pdf
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/nivizinedirisipokumanu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/79209147909.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/21664263849.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/pogalegoxodasimewaxuron.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6140/files/dowibawexarafopewojafo.pdf
    • https://cdn.shopify.com/s/files/1/0436/9258/9210/files/bank_secrecy_act_usa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/benivat.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rodupenewizaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1092/4437/files/uspap_2016_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/somapavipilumefut.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/kafetawegoxipimupo.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_off0000677b.bin
ad94e7e77fc0657732248cdd3904d054037c6590b3368317317aaf1969aed2c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677B 5368 bytes
font_01_sfnt_off000079ce.bin
5b18c68c8c3a3d710d781be77342f3d63cb1bff40649891b045959956e68a005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79CE 10060 bytes

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