Malicious PDF — malware analysis report

Static analysis result for SHA-256 e39f56c46490fead…

MALICIOUS

PDF

41.0 KB Created: 2020-08-05 00:05:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4afee0e5cb2f9cb1b06b152cff84b9d8 SHA-1: 2a4bc26c2d1e4af5deef60f9e80a98adf9d672d7 SHA-256: e39f56c46490fead87e545939d90a952bbf6e5862e467accd24b70523d3ecb7c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The embedded URL points to `https://ttraff.cc/pify?keyword=caverna+de+platao+pdf`, which is likely used to redirect the user to a malicious site. The document body contains garbled text but includes the same malicious URL, reinforcing the lure. The presence of numerous shopify.com links suggests an attempt to blend in with legitimate content while distributing the malicious payload.

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=caverna+de+platao+pdf
    • http://files.janebellinteriordesign.com/uploads/1/3/1/3/131379615/turitelujit.pdf
    • http://files.littlegiantsbands.org/uploads/1/3/1/3/131398555/172a27b63a16.pdf
    • http://files.redemptivedivorce.com/uploads/1/3/2/7/132740873/8373877.pdf
    • http://files.karikant.com/uploads/1/3/1/3/131397955/6534691.pdf
    • https://cdn.shopify.com/s/files/1/0430/3106/8823/files/sijonewerifotu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/59713219322.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7418/files/penuvatefixaxidulobapek.pdf
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/vojevuluwi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/lomazejakepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/hero_s_come_back.pdf
    • https://cdn.shopify.com/s/files/1/0434/4889/3606/files/11879231868.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9467339244.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/nabogifakupepubedek.pdf
    • https://cdn.shopify.com/s/files/1/0440/6365/4040/files/advanced_excel_formulas_in_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/fawarofazekuwibosari.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51686393220.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/fugotatuzipokonatajaj.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_off00006442.bin
8ff6c99d2bfd15b1af8cea433bd4a61d72467bcaf3af5d138008d3f35e3cb4e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6442 4824 bytes
font_01_sfnt_off000074c4.bin
61b1cbae5f60e6d34d7ad1c9039a52de9087a2b4e262fcf6ad59e0d9a2b471cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C4 10376 bytes

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