Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b34fca23aee7db2…

MALICIOUS

PDF

39.4 KB Created: 2020-08-13 07:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e32817eeb36551f871709221eb300f0 SHA-1: d2b078b48d44f042db98d78410432ee3c4cf9906 SHA-256: 9b34fca23aee7db2f9b9bfaf11cf0e9b791210c9a0fbb3248c0ec914db843162
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one pointing to a known malicious redirector at 'ttraff.com'. This suggests a phishing or scam attempt, likely to lead the user to malicious content. The document body, though heavily obfuscated, contains the same URLs, reinforcing the malicious intent. 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.com/wb?keyword=avoiding%20degenerative%20disease%20pdf
    • http://poxanusew.samanthianixon.com/uploads/1/3/1/6/131637254/2875053.pdf
    • http://fapak.gabrieliqbal.com/uploads/1/3/1/8/131855997/3108598.pdf
    • http://bekatijuw.burrnationk9s.com/uploads/1/3/0/9/130969054/6121066.pdf
    • https://cdn.shopify.com/s/files/1/0437/2535/7206/files/lerijatofevat.pdf
    • https://cdn.shopify.com/s/files/1/0432/7899/1520/files/vutireber.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/jimufiliwez.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/70334712398.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/484630536.pdf
    • https://cdn.shopify.com/s/files/1/0448/4002/6273/files/simple_present_tense_simple_past_tense_present_continuous_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/5294/7863/files/rekepasobaweviruripal.pdf
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/demeluz.pdf
    • https://cdn.shopify.com/s/files/1/0431/3776/1437/files/linked_list_cycle_ii.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/microsoft_office_2016_download_link.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_off00005d89.bin
df7c393af80cc19eb37b055dbbbd25849f84df56dd2c61041b0d9c096e28e7ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D89 5228 bytes
font_01_sfnt_off00006f66.bin
7093bac74c65511ade427435a1d685713c799dc49a14a20a8c7d7028b59c81cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F66 9796 bytes

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