Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bb7e35466aa6a27…

MALICIOUS

PDF

44.9 KB Created: 2020-08-18 13:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4493513afb15d7d656a585a2606c4191 SHA-1: c443f7e07648d1a4e52bf194e34692d44e858791 SHA-256: 4bb7e35466aa6a27b3fd67e232e927836f5bd74c2c6187562177d628802a2f04
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, disguised as a nutritional guide. This redirector is likely used to lead the user to a malicious site or download further malware. The document also contains a large number of embedded links, many pointing to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic to improve search engine visibility for malicious content.

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=nutritional+guidelines+for+one+year+old
    • http://pipuse.mtbo-sui.com/uploads/1/3/2/6/132682076/9dbd3ac4.pdf
    • http://tanabi.newhopemovement.org/uploads/1/3/1/4/131407089/gejuzetarege.pdf
    • http://files.johnknoxhouston.org/uploads/1/3/0/7/130740049/xuloko.pdf
    • http://files.ekmcreative.org/uploads/1/3/0/7/130775747/lesefutakuzikuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/pukiguxokidutase.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/64421369084.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/8467660630.pdf
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/adding_and_subtracting_rational_expressions_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/61792424166.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/22878497360.pdf
    • https://cdn.shopify.com/s/files/1/0436/0654/0445/files/new_pan_application_form_file.pdf
    • https://cdn.shopify.com/s/files/1/0447/3297/3205/files/84016019326.pdf
    • https://cdn.shopify.com/s/files/1/0433/8450/4474/files/artist_bio_sample.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/56581804899.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_off0000711a.bin
180822fa9530a25e0e46c093e6f217d5a984132e650220200d3f6bf55be9a87c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711A 5148 bytes
font_01_sfnt_off000082b4.bin
8aadefe3268aec14fca61489dc4b1b2b0e73e9df95d1d53a22bc201182f136b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82B4 10628 bytes

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