Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b6ba6dd9f415e34…

MALICIOUS

PDF

39.8 KB Created: 2020-08-16 12:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e003cb1ad7b62e17741e617ed510914 SHA-1: a0141c041d948204d6f975f9de9e74b999d0609b SHA-256: 9b6ba6dd9f415e3423a0afd2f9a93ac29f8211c36e9d95264c7367ed5c661aa4
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to drive traffic to this malicious site. The presence of numerous links, including the malicious one, indicates a link farm or SEO poisoning tactic to lure unsuspecting users.

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/wb?keyword=rhapsody%20of%20realities%20pdf%20june%202018
    • http://files.ashleylibrary.org/uploads/1/3/1/4/131453892/71bada.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6841/files/zebogururolobuze.pdf
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/tadapomigomobozafosebudu.pdf
    • https://cdn.shopify.com/s/files/1/0441/1126/5944/files/multiplication_worksheets_printable.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/zifakoludipu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89832202682.pdf
    • https://cdn.shopify.com/s/files/1/0431/1855/9389/files/bedatagetozumifigerez.pdf
    • https://cdn.shopify.com/s/files/1/0430/2376/1571/files/88322220247.pdf
    • https://cdn.shopify.com/s/files/1/0437/2273/5767/files/multivariate_probability_distributions.pdf
    • https://cdn.shopify.com/s/files/1/0450/7897/0533/files/dessert_business_plan_sample.pdf
    • https://cdn.shopify.com/s/files/1/0435/7036/4571/files/possessive_adjective_pronouns_exercises.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_off00005b83.bin
608d425c108ddaf8e2c9abf2ea51fca6d09e620707d0748be3da4c6caae2161a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B83 5836 bytes
font_01_sfnt_off00006f65.bin
5b5d525b70c79cb37729b2dd79fb66294dd00abebedb78c7f8b61df691c2bc38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F65 10276 bytes

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