Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec312cab4b5fcd0b…

MALICIOUS

PDF

40.6 KB Created: 2020-08-31 08:05:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9389882d318f239419fe3ebc947ae92b SHA-1: 3a5c24192216147078e42b7155aa34eef3eaf710 SHA-256: ec312cab4b5fcd0b2603e617e98103c284e0d7a085ce2ccedfda626d68caf25d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, with one identified as a malicious redirector. The document body is heavily obfuscated but appears to contain text related to a city zoning map, likely a lure. The primary attack pattern involves redirecting users to malicious infrastructure via these links.

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/wix?keyword=city+of+dallas+zoning+district+map
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/exercicios_de_atomistica_filetype.pdf
    • https://cdn.shopify.com/s/files/1/0437/2440/6935/files/puwekelif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/zagobalilozaxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdf
    • https://cdn.shopify.com/s/files/1/0434/7422/3269/files/kegepelutadifo.pdf
    • https://static.usrfiles.com/ugd/724fb5_31ef7dcfcc9f4db898cc397da683bbbf.pdf
    • https://static.usrfiles.com/ugd/8127dd_341e37d3a3d34638af2b8e9013a2ebce.pdf
    • https://static.usrfiles.com/ugd/5af86b_665054d2c7f54ddaa4e7cad2cacb6ded.pdf
    • https://static.usrfiles.com/ugd/b8c837_a82fbb6c4a634e5a95281d50a2dc0b2e.pdf
    • https://static.usrfiles.com/ugd/7598fa_cfdd4277eb8b4292b51490d50c061534.pdf
    • https://static.usrfiles.com/ugd/b8c837_82c4394a3f19487da9638d2a4cc288e7.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005268.bin
589e78d3648245aa7c2e09614bf7f992bb2888aef1db6a590c2107afb23bb057		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5268 5320 bytes
font_01_sfnt_off00006475.bin
51cdf356279183c51b8c9dd94c31e38f0b32c31f365b9935ceb857efae32fbe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6475 10484 bytes
font_02_sfnt_off00008802.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8802 4324 bytes

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