Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e50817a8527719…

MALICIOUS

PDF

39.0 KB Created: 2020-08-20 08:10:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0a8ca1b6996fc69dd3d23b95d0d0de5 SHA-1: a1069bdb0bd3b092016bef77ea94912ce212e7dd SHA-256: a8e50817a852771914c08260da4bf1a61a4dcfad866ba6a56c0e38572a68be89
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.com/pify?keyword=video+story+instagram+online'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on shopify.com. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking PDF links, suggesting a lure to a malicious site.

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=video+story+instagram+online
    • http://files.dfreemontswr.com/uploads/1/3/1/1/131163492/nexikedeniwenate.pdf
    • http://files.anotherplacecalledhome.net/uploads/1/3/1/3/131397973/61093d31.pdf
    • http://files.kenplattner.com/uploads/1/3/0/8/130813732/0fc456eb325.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/bubusasuwefedavuzex.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/70160294159.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/declaration_of_assets_and_liabilities_format_in.pdf
    • https://cdn.shopify.com/s/files/1/0440/4710/6213/files/chiedere_informazioni_al_telefono_in_inglese.pdf
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/jadatid.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2105/files/65192291187.pdf
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/alleluia_mozart_soprano.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/fuliboxanopaxanesa.pdf
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/6088208762.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/49455870889.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/kirozegajuberatifojapom.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_off00005c72.bin
d0e1d21b1d221f011cee23f37100277ea5b8c5714e699476bf5962eea955f441		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C72 5212 bytes
font_01_sfnt_off00006e1a.bin
fdbd260e08519c7ec5871cdf9378ff4287dafc4548b5ffb6be50877cf948c0f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1A 9740 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.