Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ea6b19b63d16f8…

MALICIOUS

PDF

39.9 KB Created: 2020-08-06 03:11:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82276dc989b9168195ad1e652cf280c3 SHA-1: 5f65927ad0bb199e5044bb803f02464a73415993 SHA-256: 95ea6b19b63d16f86d4694108405d46db5ccb29c29dbe2c58b5bffea10de845d
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=brouter+in+networking+pdf'. Another critical heuristic indicates a PDF link farm, suggesting the document's primary purpose is to host and distribute links. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern. No scripts were extracted from this sample.

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/pify?keyword=brouter+in+networking+pdf
    • http://losufe.pandos.org/uploads/1/3/2/6/132695569/6050049.pdf
    • http://files.andreanelson.studio/uploads/1/3/1/6/131606360/82ab7c45.pdf
    • http://files.stephenkozan.com/uploads/1/3/1/3/131381414/99713f85f9650.pdf
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/lowajumafodude.pdf
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/57366297634.pdf
    • https://cdn.shopify.com/s/files/1/0434/3103/5032/files/buvugixuribiwazuferibatit.pdf
    • https://cdn.shopify.com/s/files/1/0430/2995/4721/files/emory_college_confidential.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/52945462890.pdf
    • https://cdn.shopify.com/s/files/1/0429/7926/2623/files/julupi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9592/5671/files/jugazawaxi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/lojonadu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/lodelakixasuruxagaxonope.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/zukagitagobisemevozumake.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_off00005e33.bin
b0f8974b73d7906a57779430cd271d81ce091adb8fc8a60a002a2c316b897323		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E33 4992 bytes
font_01_sfnt_off00006f62.bin
da44d9ead6cb1180142fd3619b81f3d65ed4fc483fe3eff4efa9700972e42f50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F62 10464 bytes

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