Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ddd8c0916d3107…

MALICIOUS

PDF

67.5 KB Created: 2020-08-31 03:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdb2b7da5bf0c21c522494b8b79f8f0a SHA-1: 6b16cf486418a06e5510515593f8c0312bced9ad SHA-256: 92ddd8c0916d3107ef1a70c6ef3c3cf19440649df669d3fa46d6b604fb5a6ba0
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM. The primary malicious URL identified is ttraff.com, which is likely used for redirection. The document also hosts a large number of links to PDFs on Shopify, suggesting an SEO manipulation tactic. The ML classifier also flagged this PDF as malicious with high confidence.

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/wix?keyword=travel+guide+for+rome+italy
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/xuzewixajis.pdf
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/kratom_kaufen_schweiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3813/files/nebasixapalelumigef.pdf
    • https://cdn.shopify.com/s/files/1/0434/9001/7430/files/77046788527.pdf
    • https://cdn.shopify.com/s/files/1/0433/4836/1375/files/download_bakery_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0437/8768/1952/files/949965852.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/7100862817.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/sql_injection_password_form.pdf
    • https://static.usrfiles.com/ugd/b8c837_46dc87ecc9b048e3a764ab1bcb320ec0.pdf
    • https://static.usrfiles.com/ugd/b8c837_9025036dbb73489ea427cea1acc51b50.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa86e560b5d84967a8f05fbf899b2897.pdf
    • https://static.usrfiles.com/ugd/8127dd_4443b983f31646f39f8892fcc17cc2ea.pdf
    • https://static.usrfiles.com/ugd/0511f5_0e6ac1396ca046988a9c91bf63625898.pdf
    • https://static.usrfiles.com/ugd/b8c837_12985fe92d964c679b808b2fc07d15e6.pdf
    • https://static.usrfiles.com/ugd/ce0e6d_097ffae52ef5488a8764247f6456253e.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_off0000cb2b.bin
e0742a802866c7a814031ca730c066b5a8f5aeb65c4c250cf9c6a09ee92e2392		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB2B 5160 bytes
font_01_sfnt_off0000dcb3.bin
1dd9bdd8f0027a995f57b0e56c1f1385e70a6d2f8342a993e773383bcae11126		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB3 10572 bytes

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