Malicious PDF — malware analysis report

Static analysis result for SHA-256 334efbf14166b60c…

MALICIOUS

PDF

42.6 KB Created: 2020-08-19 23:17:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff93bda8f8308271abd600ca1104c4bf SHA-1: efadab29929f5eed7bfdd43e391b727eeb575264 SHA-256: 334efbf14166b60c3f4c48668b825dbd9127b9541f66a7b3d81e5a3eff9b25a7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=guitar+chord+sheet+app'. This URL is embedded within the document body, disguised as a legitimate resource. The file also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The primary malicious link is the redirector, which likely leads to a phishing or malware distribution site.

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/pify?keyword=guitar+chord+sheet+app
    • http://files.crishayantis.com/uploads/1/3/0/7/130776223/9517733.pdf
    • http://files.harvestministriesfl.org/uploads/1/3/1/3/131379899/7315448.pdf
    • http://files.drawingdecentered.com/uploads/1/3/0/7/130775870/4d60e49392548.pdf
    • http://files.kristinedonnelly.com/uploads/1/3/2/7/132740260/398307.pdf
    • http://zewiwu.newburyportgridironclub.org/uploads/1/3/1/4/131406717/6172906.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/rerimibibidukozexivitit.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7811/files/seluxamumi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0383/7591/files/engineering_statistics_5th_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/9354/7426/files/remorurug.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/zigujituded.pdf
    • https://cdn.shopify.com/s/files/1/0432/7879/4917/files/goligesipulazugij.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/21386812019.pdf
    • https://cdn.shopify.com/s/files/1/0440/1247/0422/files/teboradisepusejed.pdf
    • https://cdn.shopify.com/s/files/1/0429/1805/1996/files/97707456396.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3763/files/learning_french_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/63931563674.pdf
    • https://cdn.shopify.com/s/files/1/0429/6451/7023/files/api_platform_filter_example.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_off000069f6.bin
fbf997b44398b28c03c0d8c7fd1ee1641b379aba720d25164d904e8b76ece8b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F6 5160 bytes
font_01_sfnt_off00007b77.bin
be9b203e314cdc75dc0b088c1c788ed3778d111c235e809db05d5ee0cb8aaa17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B77 9812 bytes

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