Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c60df6a72b07e5…

MALICIOUS

PDF

40.6 KB Created: 2020-08-16 22:57:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9715a435e5e4323f52e813c48bed19b8 SHA-1: bc12dee7794fbf3743d29521818eba6bc55236c7 SHA-256: f6c60df6a72b07e5eb1d1646227d6cdb83196da32b8278c4a2362ab10a1f3544
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector. The document body, though malformed, contains text related to 'performance parts' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier strongly supports the malicious verdict.

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=performance+parts+for+1996+ford+f150
    • http://files.bwaltonwrites.com/uploads/1/3/0/7/130776599/8371195.pdf
    • http://files.wolfisle.com.au/uploads/1/3/1/1/131163969/duwura-jiresomadamiz.pdf
    • http://files.katyfaceinvestigations.com/uploads/1/3/1/4/131407571/7a31d967eb417a0.pdf
    • http://zuwepa.jolipbooth.com/uploads/1/3/2/8/132814930/wulamiwaropojizi.pdf
    • http://files.northviewbandboosters.net/uploads/1/3/1/6/131607712/tajadulupusi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/puliwaxaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/wurufugomekogo.pdf
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/73726098767.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/wakadumexuxuviwifan.pdf
    • https://cdn.shopify.com/s/files/1/0432/2692/3172/files/54282166347.pdf
    • https://cdn.shopify.com/s/files/1/0435/7193/7439/files/edexcel_a_level_maths_textbooks_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/somenomorew.pdf
    • https://cdn.shopify.com/s/files/1/0435/4660/7784/files/filmic_pro_apk_6._7._7.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_off000050eb.bin
32a891826b11bb8c436c8bc9632aab2bcba384df7782dc3e338db1092d77077c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50EB 5896 bytes
font_01_sfnt_off000064df.bin
00991d2c6de6bd2ef91b06e3be8b48611aac564d39d7ed3a1ef13374cfdd4277		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64DF 15152 bytes

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