Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a21c1c25f1ae8f0…

MALICIOUS

PDF

39.1 KB Created: 2020-08-30 04:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ad14e238b7400ca67b31207f583d824 SHA-1: efca50066a5f0ff3c2566f69290b15d450c40e88 SHA-256: 9a21c1c25f1ae8f04bb38316da258fad0a525d8e3ea9e1ccef17b620cc2fd080
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'sheet music' and a URL that appears to be a lure. The presence of a malicious redirector URL and a link farm suggests an attempt to direct users to a harmful site, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of specific execution behaviors.

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.cc/wix?keyword=oh+holy+night+sheet+music+soprano+so
    • https://cdn.shopify.com/s/files/1/0434/6655/5549/files/baxipojaxiziranab.pdf
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/82775204727.pdf
    • https://cdn.shopify.com/s/files/1/0432/2020/5726/files/kizomupuzanaluzemepux.pdf
    • https://cdn.shopify.com/s/files/1/0439/1829/5195/files/saparenepobudupawagi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8262/0834/files/solar_panel_components_and_functions.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2556/files/draw_sheet_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0464/8068/7272/files/2005_mustang_v6_auto_to_manual_swap.pdf
    • https://cdn.shopify.com/s/files/1/0428/5644/8167/files/28607124414.pdf
    • https://cdn.shopify.com/s/files/1/0429/0838/5439/files/12613376807.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e6028287d0e476e80f2e59dde7dd58e.pdf
    • https://static.usrfiles.com/ugd/b65acf_11f88abf88324e3fa141c1557d7ef3b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e66fdcf727c4596b36f7747d3006f46.pdf
    • https://static.usrfiles.com/ugd/b444d4_01972aed999845449afc0cf8d5802914.pdf
    • https://static.usrfiles.com/ugd/599f1c_c8b65e030a7b4517bdb197b6e860fb5f.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_off000058da.bin
9f12401e72016a9c4f4c41c97cccb0dfc3542e0c977fbf88eeedc4451a602755		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58DA 5476 bytes
font_01_sfnt_off00006b5d.bin
1224977d70024d1d954cb84cd2a363aa72374647db27318caaae4da18b091454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5D 10624 bytes

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