Malicious PDF — malware analysis report

Static analysis result for SHA-256 c71283249682e052…

MALICIOUS

PDF

47.4 KB Created: 2020-08-09 04:42:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d20111d2c76295b6f00e4a68f7939c9 SHA-1: 3e8dd82604a2c7cd0b479bf1e71d1f784dc17ac2 SHA-256: c71283249682e052ca6f0415c667731536083d0c154f24fcd8f9ff5359e535f9
120 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'pdf to word online converter free download' and embeds numerous external links. One critical heuristic indicates a malicious redirector link to 'ttraff.com', suggesting a phishing or redirection attempt. Another heuristic flags a large PDF link farm, with many links hosted on 'cdn.shopify.com', indicating potential SEO manipulation or a large-scale distribution effort. No scripts were extracted, but the embedded links and the nature of the document body strongly suggest a malicious redirection or phishing attack.

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=pdf+to+word+online+converter+free+download
    • http://dikiboki.clickclackfitness.com/uploads/1/3/1/8/131856772/d418269b.pdf
    • http://files.eccrotherham.org/uploads/1/3/1/3/131398139/5168434.pdf
    • http://files.nycancerfoundation.org/uploads/1/3/1/0/131070178/9f6f03d.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0719/files/feliwelivenududurodefeba.pdf
    • https://cdn.shopify.com/s/files/1/0437/4380/5594/files/27256324011.pdf
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/nesinoxugisuzijewoje.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17673355306.pdf
    • https://cdn.shopify.com/s/files/1/0450/3647/0430/files/std_string_formatting.pdf
    • https://cdn.shopify.com/s/files/1/0432/4848/4507/files/texuzibolufafotijusozij.pdf
    • https://cdn.shopify.com/s/files/1/0428/3419/8684/files/symmetry_financial_group_reddit.pdf
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/ceclor_bd_bula.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/94667012651.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_off00007cbe.bin
9daa51d7c4aba1a05620b54d2dc3b5542b764e65d0b66aaad61c28c70cd8f5bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CBE 4992 bytes
font_01_sfnt_off00008de2.bin
2c324418d6a1f859b17bc2fb46c16b9b202f43d9db80be1a5bc37d717dc5f4db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE2 10128 bytes

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