Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3da02f5665ca9a…

MALICIOUS

PDF

36.9 KB Created: 2020-08-02 06:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8241228ace77f11f3d5a53130d5826c SHA-1: 1360e553c34922b0af93a6e85c7e721bee1a8b6c SHA-256: df3da02f5665ca9a3585672241c749b3a1ac34555d6c5b07031a86638979d325
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary malicious URL is reconstructed from the embedded content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=d%2526+d+3.+5+dm+guide+pdf
    • http://files.northernlightsplastics.com/uploads/1/3/2/3/132302888/9379970.pdf
    • http://files.jpkvcollaborative.org/uploads/1/3/0/7/130739528/2840057.pdf
    • http://files.moneycoachbill.org/uploads/1/3/0/7/130776589/zisuminum.pdf
    • http://files.swallowfall.com/uploads/1/3/1/0/131070845/vokufos_rivuvovixowemo_jodijomezox.pdf
    • http://files.lauralrees.com/uploads/1/3/2/8/132815753/474294.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/57666725306.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1981/files/kemafipu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.pdf
    • https://cdn.shopify.com/s/files/1/0436/5703/5929/files/95567728040.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/4928014674.pdf
    • https://cdn.shopify.com/s/files/1/0431/7983/5547/files/jovakifagipefogozega.pdf
    • https://cdn.shopify.com/s/files/1/0439/7318/1598/files/7528582676.pdf
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/pozazanuzolafutewavegel.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7997453156.pdf
    • https://cdn.shopify.com/s/files/1/0433/6805/4949/files/75282510287.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_off000056de.bin
bae8c65fbb2985f8f9e3f3f2bcf16a0f9e8e1e4a7d5ebf1135d71e3fbc9ddb2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56DE 4156 bytes
font_01_sfnt_off0000650c.bin
1fb60811b0c8b860fc7a3ff3230a7306e895899a2994d98700107a181194c258		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650C 10008 bytes

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