Malicious PDF — malware analysis report

Static analysis result for SHA-256 575258f4e0db8f8d…

MALICIOUS

PDF

49.5 KB Created: 2020-09-17 23:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 032a7e5db9f7ccc10e351b5ff9b96db8 SHA-1: 113ac9fbd6d90a99b147de9a632fd802431bc254 SHA-256: 575258f4e0db8f8d7bb7f894435643246b0a931669fc232e7698c8dac6cb3bd2
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to domains associated with link farms and redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=affirmative+sentences+10+examples, which is flagged as a malicious redirector. This suggests the primary goal is to redirect the user to malicious content, likely for SEO poisoning or phishing purposes.

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/wix?keyword=affirmative+sentences+10+examples
    • http://files.nordoniay2y.com/uploads/1/3/1/3/131397934/4808842.pdf
    • http://numaminaz.sabersmartblog.com/uploads/1/3/2/6/132681229/2312155.pdf
    • http://womera.voxelquest.com/uploads/1/3/0/7/130740033/a8e9654288873.pdf
    • http://nirezop.21cclcdm.com/uploads/1/3/1/6/131606490/8026298.pdf
    • http://wulidolak.oklahomagameused.com/uploads/1/3/0/7/130739640/4e2b0c094bac3f.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0430/files/98519858896.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/69196625867.pdf
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/84832268924.pdf
    • https://cdn.shopify.com/s/files/1/0432/4235/6904/files/16300675206.pdf
    • https://e79462b3-8259-4f89-8d7d-3765202ef93c.filesusr.com/ugd/694d5d_e18042c957f8424690ca3f20bd97f5cb.pdf?index=true
    • https://c322a18c-f5c3-48c0-92db-e63eb7e255d2.filesusr.com/ugd/cb5dea_6226e4ddd72d43ab9d9bfde5a6881f60.pdf?index=true
    • https://df6c5ec8-3b68-44b2-8ec4-715252f39d4d.filesusr.com/ugd/a421e3_522e4eae48a44188b3fc7ab3fdf147e6.pdf?index=true
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006826.bin
71a92191d75a848f3d3ab1ffbe8322d80a8aa2c04bf55579562da62c7082db7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6826 5472 bytes
font_01_sfnt_off00007ab9.bin
e73f7ca1acfe9144a0158e9272274290670d13a8737ad0ae07a9fc0e8bcc186a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB9 10152 bytes
font_02_sfnt_off00009dac.bin
977e998d9c497f152f5f39ca6a6519a75efb6b3bbb36c87883780a49236a3fbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DAC 8292 bytes

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