Malicious PDF — malware analysis report

Static analysis result for SHA-256 85271d9cde79ba67…

MALICIOUS

PDF

43.6 KB Created: 2020-08-26 03:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c29ed8fc1ea186a91f4add3a06e9ad5b SHA-1: 549697f968b28134a6eec72cd9bb5276c9abf423 SHA-256: 85271d9cde79ba674f42052976e9f321f37d08e480396f5d64f57f8dea90585e
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 'https://ttraff.me/pify?keyword=poe+glacial+cascade+jewel'. This, combined with a PDF link farm heuristic, indicates a likely phishing or scam attempt. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted, and the family is unknown due to the lack of further indicators.

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.me/pify?keyword=poe+glacial+cascade+jewel
    • http://files.creativestudio23.com/uploads/1/3/0/7/130738850/jonurisaf-tekodex.pdf
    • https://cdn.shopify.com/s/files/1/0440/4117/5190/files/gemobexigodigafoxifamuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/fuvinejarewume.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/32890246358.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/dirurafuzofinisavaf.pdf
    • https://cdn.shopify.com/s/files/1/0447/0633/2825/files/abc_books.pdf
    • https://cdn.shopify.com/s/files/1/0437/0900/5978/files/sample_conclusions_for_reports.pdf
    • https://cdn.shopify.com/s/files/1/0428/4956/6886/files/brocades_of_banaras.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/49083676525.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gabagijujusudizal.pdf
    • https://cdn.shopify.com/s/files/1/0439/8927/0686/files/sadaluvewum.pdf
    • https://cdn.shopify.com/s/files/1/0433/4275/8056/files/46760398354.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_off00006dbc.bin
2230c652f09fed6718764c6d0ffea3849412be48396b13a9f896eb3a5caed7f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBC 5180 bytes
font_01_sfnt_off00007f81.bin
9381ebff2d8b8388fb1d3930ee2408c6ce2cd89355635e852535c6eb068e268e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F81 10156 bytes

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