Malicious PDF — malware analysis report

Static analysis result for SHA-256 d28fc13d3e2f354f…

MALICIOUS

PDF

37.7 KB Created: 2020-09-02 18:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 021c2d4e6e306cf8345cf67742c205e0 SHA-1: 55bd22c544ed69bc7ece5daa766c6d1759cb1c7b SHA-256: d28fc13d3e2f354fc7e153481f3c53591317b6c03771cb2bb0522709f330e29a
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a malicious URL, disguised with a movie title. This is further supported by heuristics indicating a malicious redirector and a link farm. The document body, though heavily obfuscated, contains the malicious URL and references to other PDF files, suggesting a social engineering lure to drive traffic to malicious sites.

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.club/pify?keyword=ehsaas+the+feeling+full+movie
    • https://static.usrfiles.com/ugd/a2d007_36c2e692f0e74208865a16ed9a5ecc95.pdf
    • https://static.usrfiles.com/ugd/b8c837_4ce93d7e56684d80976aec5ef8e902b1.pdf
    • https://static.usrfiles.com/ugd/0ad6c7_831e4ac9f2da4f36b6b735c07195a3bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9cfdad9411f46a3af873fc3decc710c.pdf
    • https://cdn.shopify.com/s/files/1/0452/5948/9442/files/cricut_mini_press_heat_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/zumilebopojufelol.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/50577935280.pdf
    • https://cdn.shopify.com/s/files/1/0440/5451/1766/files/adjektiv_p_svenska.pdf
    • https://cdn.shopify.com/s/files/1/0437/1264/3223/files/frases_para_ligar_mujeres.pdf
    • https://static.usrfiles.com/ugd/b8c837_6836a9617dd74fd388871391ef6bd062.pdf
    • https://static.usrfiles.com/ugd/575fb0_1f0aabada030457aacec8f39c324af67.pdf
    • https://static.usrfiles.com/ugd/b8c837_c720883fa70a4b16aa28daeb13e60fa9.pdf
    • https://static.usrfiles.com/ugd/a7074a_22efe6efebb6424fa7b48a992534b066.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_off000054bc.bin
68655ac3253ef1f462f2bfdcd78c63418c12acea368a1eed4f5c677915b8fbf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54BC 5104 bytes
font_01_sfnt_off00006606.bin
04d9435186266c330a1bc30a5343a34c62cd43917cf0c992af19460b8aeb042f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6606 10860 bytes

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