Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e8d3d637beb516…

MALICIOUS

PDF

35.5 KB Created: 2020-08-21 10:33:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 595ae73519cbb45431d25a9b3489c0b1 SHA-1: b9689459eb2278a4d4f3333e422c5ad9eaf014ae SHA-256: e8e8d3d637beb51613c36fce1fced52e65fd0e62024aab280a9f087bdd4eaa2c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to `ttraff.ru`, known malicious infrastructure. The document body, though heavily obfuscated, contains text related to sheet music and the malicious URL. This suggests a lure to trick users into visiting a malicious site, likely for further exploitation or credential harvesting.

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=chaconne+bach+sheet+music+violin
    • http://files.emmertstheatre.com/uploads/1/3/2/6/132681308/wesed.pdf
    • http://sefomas.str8coastin.com/uploads/1/3/1/3/131398444/0090578b.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/modewamifiju.pdf
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/43428062663.pdf
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/daruzatipugazan.pdf
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/10663250483.pdf
    • https://cdn.shopify.com/s/files/1/0429/3050/3843/files/kisofupebesalosasa.pdf
    • https://cdn.shopify.com/s/files/1/0438/1173/3664/files/medical_terminology_quiz_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0449/8187/8942/files/32466036769.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/warobigogi.pdf
    • https://cdn.shopify.com/s/files/1/0428/2440/1063/files/6086364932.pdf
    • https://cdn.shopify.com/s/files/1/0437/7985/0391/files/43274509477.pdf
    • https://cdn.shopify.com/s/files/1/0436/0568/8483/files/nipirurodikexe.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_off00004e02.bin
cf5a0f17f9b1523cae4daf75112d4abd7c56b687860d88b838780a830f60492a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E02 5048 bytes
font_01_sfnt_off00005f04.bin
a19c471063cc72ebf0b397127e17efbc3642186441333c926ab173733863e7cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F04 9952 bytes

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