Malicious PDF — malware analysis report

Static analysis result for SHA-256 5016c4a933e1c17e…

MALICIOUS

PDF

39.8 KB Created: 2020-08-01 12:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 562660a6bcfe6419fd6f3992924b8af4 SHA-1: 2e4b7439d20b9cfce0400969e911262e6230bbb2 SHA-256: 5016c4a933e1c17ee72b2f62f3f5bf32880e60d22192c811d4ee6b5820fc9a10
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to external PDF files hosted on Shopify. One URL, https://ttraff.cc/pify?keyword=round+down+python, is flagged as a malicious redirector. This suggests the document is part of a link farm or SEO manipulation scheme, potentially leading users to malicious sites or further payloads. 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.cc/pify?keyword=round+down+python
    • http://files.applemarketingcompany.com/uploads/1/3/0/7/130740521/c0721213d803896.pdf
    • http://files.adventurescomingtolifeinwords.com/uploads/1/3/2/7/132740462/midevut.pdf
    • http://files.english4business.cz/uploads/1/3/1/3/131380934/8247688.pdf
    • http://files.lakewass.com/uploads/1/3/1/3/131384721/c9d256364.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/vejevuvamuz.pdf
    • https://cdn.shopify.com/s/files/1/0438/7792/5019/files/sitenido.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/mixipox.pdf
    • https://cdn.shopify.com/s/files/1/0432/5585/7315/files/vewopapugosas.pdf
    • https://cdn.shopify.com/s/files/1/0439/4971/9720/files/fisedujiwegagofagejisuzap.pdf
    • https://cdn.shopify.com/s/files/1/0429/9096/0799/files/kumujinugiru.pdf
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/32748711765.pdf
    • https://cdn.shopify.com/s/files/1/0435/5378/3957/files/mekapiwomunarenabep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50537202024.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_off00006143.bin
e0d37679db8840418d5e6a68e28aab059f3b636ee2d02ce0e031101c951052f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6143 4732 bytes
font_01_sfnt_off00007177.bin
328b28f9d79b095fe604e24a7af33e131c6245d81ce7575b12a76d0256db4ba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7177 9852 bytes

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