Malicious PDF — malware analysis report

Static analysis result for SHA-256 4053e18b39aacec5…

MALICIOUS

PDF

84.6 KB Created: 2020-08-31 00:13:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8da7fde90540cf3052fd9c5b7d755972 SHA-1: a9f0c5c190bf5b4f5c61796399518595bd398f3b SHA-256: 4053e18b39aacec5ad265ee066150b27417afb54df65a4190de9bba367b4e01d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/wix?keyword=corporate+valuation+theory+evidence+and+practice+pdf', is the primary indicator of malicious intent. This suggests the document is designed to redirect users to a harmful site, likely for phishing or malware distribution. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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=corporate+valuation+theory+evidence+and+practice+pdf
    • https://static.usrfiles.com/ugd/bb13a2_eadc2dd3bab140f3b331c8b205e119d1.pdf
    • https://static.usrfiles.com/ugd/90423f_680c9bdabbdf4209bdb62f711fcf464f.pdf
    • https://static.usrfiles.com/ugd/934fc3_1b3e31114c774999bea9fcb73448901c.pdf
    • https://static.usrfiles.com/ugd/f515ca_fbab2d5d138d45a886c099d4402ee795.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae1002feafd14e38a9b8b3d76a79c158.pdf
    • https://static.usrfiles.com/ugd/b9801a_84b6c38e40df49929b2354761557ef4b.pdf
    • https://static.usrfiles.com/ugd/23e9be_b1d5108b365d4a6f99ef10790d0de4a4.pdf
    • https://cdn.shopify.com/s/files/1/0448/7793/8855/files/the_crisis_of_capitalist_democracy.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/17001278791.pdf
    • https://cdn.shopify.com/s/files/1/0435/8366/8392/files/update_android_9_p20_lite.pdf
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/remowisali.pdf
    • https://cdn.shopify.com/s/files/1/0437/8682/9981/files/twine_save_editor.pdf
    • https://cdn.shopify.com/s/files/1/0434/0292/0086/files/analog_fundamentals_a_systems_approach.pdf
    • https://cdn.shopify.com/s/files/1/0428/4953/4111/files/jidutegaf.pdf
    • https://cdn.shopify.com/s/files/1/0430/5013/9801/files/25075393854.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_off00010474.bin
ec79ec2413f762578bb092d09d9f1f796a415c7e40150ad7303f6da2e5271fe5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10474 5132 bytes
font_01_sfnt_off000115ef.bin
40b8adc18c520526c971dccc8e78055ab5a5af80318e4cf01960b43e3be51281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115EF 15084 bytes

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