Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd875de72575bf2f…

MALICIOUS

PDF

33.7 KB Created: 2020-08-11 15:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9033f2f9b151198dbd1b3f1ac82a58dd SHA-1: bf6e33fc493488464223059719f53cd1800cb872 SHA-256: bd875de72575bf2feba76159d95d8bc134ade32b4989135487ca076fd2b725e4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains the same URL and numerous other links, many hosted on cdn.shopify.com, suggesting a link farm or redirection scheme. The primary malicious URL is likely intended to lead the user to a compromised site or phishing page.

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=wordly+wise+3000+book+7+lesson+17+pdf
    • http://fopisiw.aoerecording.com/uploads/1/3/1/6/131606347/fuwepajawogirujeriv.pdf
    • http://files.charlesadeandrade.com/uploads/1/3/1/6/131606343/4324638.pdf
    • http://dijoruv.jamesvandenburg.com/uploads/1/3/1/3/131383791/tazigupipipusuw.pdf
    • https://cdn.shopify.com/s/files/1/0440/7656/4630/files/litozitatukazinodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdf
    • https://cdn.shopify.com/s/files/1/0434/8257/9110/files/8526011502.pdf
    • https://cdn.shopify.com/s/files/1/0436/1220/9315/files/importance_of_cash_flow_management.pdf
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/nixuzefutepipelu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/tezenujawu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7388/0739/files/paxejujupaso.pdf
    • https://cdn.shopify.com/s/files/1/0438/2697/0786/files/malwarebytes_2._2_premium_key.pdf
    • https://cdn.shopify.com/s/files/1/0437/7188/7767/files/5th_grade_math_volume_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/28952316684.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_off000045f6.bin
f981dd4851b16ea549db50d69174dcea59d2396f8920feb243bdfc04618e2978		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45F6 5676 bytes
font_01_sfnt_off00005980.bin
d28543082852dfd3723212eb97ca42cbaf4359862308a3576522329a6ddf45bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5980 9480 bytes

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