Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a021178375207a…

MALICIOUS

PDF

39.0 KB Created: 2020-08-11 22:05:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 067ae4ed1aa4f1d764c93e9319bae1b8 SHA-1: 92d015f919f50c6d6fbe2cf550104d31a4b581fd SHA-256: 39a021178375207abf095cbc69fd355282c828b8ead69d01013ba0d3349478b0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=multi+agenda+fiscal+2020+pdf', which is flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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.ru/pify?keyword=multi+agenda+fiscal+2020+pdf
    • http://files.fordandfordins.com/uploads/1/3/0/7/130740165/3e65c978d6679.pdf
    • http://files.mrsroe.com/uploads/1/3/1/8/131872178/wavenawogered.pdf
    • http://files.citadelhomeinspections.ca/uploads/1/3/1/6/131637291/jemekif_modebafigi_lamif.pdf
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/circle_of_willis_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0433/1916/5086/files/tojipunoruwosujulolo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6539/3831/files/83890382611.pdf
    • https://cdn.shopify.com/s/files/1/0431/6944/8097/files/pivabomajopunepet.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/99305762714.pdf
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/rewuwagetufunijelefitefu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9689/9733/files/bacillus_cereus_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0436/0830/9923/files/mixusiluzufix.pdf
    • https://cdn.shopify.com/s/files/1/0435/3913/6661/files/mutejufozitapemavexoli.pdf
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/mabemobeji.pdf
    • https://cdn.shopify.com/s/files/1/0435/3877/6223/files/lasko_heater_manual.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_off000058cc.bin
a823e907a80178c359315d6e1c1cad75c01821486faf4c6d2266dc779f53d966		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58CC 5508 bytes
font_01_sfnt_off00006ba6.bin
c8642d46c3d5e2d8475de85aee4572214072f5fa9d7a66507ecdfd81e229ccd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA6 10456 bytes

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