Malicious PDF — malware analysis report

Static analysis result for SHA-256 c691fe27cf1706a6…

MALICIOUS

PDF

47.6 KB Created: 2020-08-09 05:20:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be58d792e63116374f277067ad56fd32 SHA-1: 2efd36b1e325475da7338ab9bb31c22784b9f48b SHA-256: c691fe27cf1706a66550cfc8115a49f6213c72c2679977e9144e57ff1f4987dc
150 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.com/pify?keyword=robotic+process+automation+blue+prism+pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous other links hosted on cdn.shopify.com and other domains indicates a link farm strategy to obscure the final malicious destination.

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=robotic+process+automation+blue+prism+pdf
    • http://files.inhomesalestrainer.com/uploads/1/3/2/6/132682936/1963021.pdf
    • http://kareset.warnerwags.com/uploads/1/3/2/6/132681352/zilasujeto.pdf
    • http://rekatare.mayadayal.com/uploads/1/3/1/0/131070493/b9a9192.pdf
    • https://cdn.shopify.com/s/files/1/0434/0301/8392/files/7060282153.pdf
    • https://cdn.shopify.com/s/files/1/0430/6596/6754/files/70782900650.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/dudixubebavubuxoxe.pdf
    • https://cdn.shopify.com/s/files/1/0439/4231/4152/files/namorado_de_aluguel_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/bifififibelozaxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/57567462525.pdf
    • https://cdn.shopify.com/s/files/1/0428/9291/8937/files/zununavolune.pdf
    • https://cdn.shopify.com/s/files/1/0428/3678/7356/files/evinrude_6hp_outboard_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/numbers_1_to_10000.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_off00007b74.bin
55e1e71ccc2cea72f0f8a92265630822af138183734f9ca5d0a095d3ae87ebbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B74 5448 bytes
font_01_sfnt_off00008de1.bin
9bd4df004730b48fafe810d446317535ec7c271ab39dfd5605281dc761032faf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE1 10452 bytes

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