Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3b541bbf31373b…

MALICIOUS

PDF

43.1 KB Created: 2020-08-25 18:20:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 761000b18d6ad2df4d09733c45483c15 SHA-1: fe92564d39f8220e1964049677a6aac0eb1206d9 SHA-256: fa3b541bbf31373bcac8c39dca66328a06ff32f7042ae71616bab531694b357e
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=todas+as+alternativas+contem+um+par+de+for%25C3%25A7as+a%25C3%25A7%25C3%25A3o+e+rea%25C3%25A7%25C3%25A3o+exceto', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to physics principles and mentions the authoring application, suggesting a deceptive lure.

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.cc/pify?keyword=todas+as+alternativas+contem+um+par+de+for%25C3%25A7as+a%25C3%25A7%25C3%25A3o+e+rea%25C3%25A7%25C3%25A3o+exceto
    • http://files.portlandtnrotary.org/uploads/1/3/0/7/130775892/d15662557.pdf
    • http://files.dollsforeverychild.org/uploads/1/3/0/7/130739399/pamax.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/56052160528.pdf
    • https://cdn.shopify.com/s/files/1/0430/2667/7913/files/67568893831.pdf
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/guwobid.pdf
    • https://cdn.shopify.com/s/files/1/0438/2470/9794/files/rectification_of_errors.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/dupapowupoteg.pdf
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/zuvojafupotexerugukawa.pdf
    • https://cdn.shopify.com/s/files/1/0438/2159/6834/files/20793730834.pdf
    • https://cdn.shopify.com/s/files/1/0431/7131/5876/files/78434876334.pdf
    • https://cdn.shopify.com/s/files/1/0432/5317/0334/files/install_wine_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/nerefe.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_off00006343.bin
875ef76fcbd60257baa76415e9de02eaf1c0caa5051b56f70dd9ab24af0f8462		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6343 5876 bytes
font_01_sfnt_off0000765f.bin
7a811b98e46dd9eb0a02385919557217c3664625d75315d1926fcc277c33389c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x765F 12676 bytes

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