Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff159321992d249a…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 11:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ee32afe5734cb87f405045533c27a85 SHA-1: 2b6184fc96e53710eacb490ecb12e71d3aeba535 SHA-256: ff159321992d249a525e7246a223eb6e9dc22171db17066ac7fef69de9cf8ae8
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and phishing. One critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/pify?keyword=best+android+game+development+platform, which is presented as information about Android game development. The document body, though heavily corrupted, also contains this URL and other links to Shopify-hosted PDFs, suggesting a link farm designed to drive traffic to malicious infrastructure. No scripts were extracted, but the primary attack vector is the malicious redirection link.

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=best+android+game+development+platform
    • http://files.dynamic-body.org/uploads/1/3/1/8/131856347/d75c0604ea702d.pdf
    • https://cdn.shopify.com/s/files/1/0430/5505/5002/files/kufaguxejab.pdf
    • https://cdn.shopify.com/s/files/1/0429/5488/3231/files/54199033184.pdf
    • https://cdn.shopify.com/s/files/1/0433/8080/1703/files/galileo_travelport.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/11518212012.pdf
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/non_associative_algebra_and_its_applications.pdf
    • https://cdn.shopify.com/s/files/1/0437/9967/5041/files/checkbox_in_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/alligation_and_mixture_short_tricks.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/18557348639.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4986/files/82360760003.pdf
    • https://cdn.shopify.com/s/files/1/0431/2943/8370/files/tosutepaw.pdf
    • https://cdn.shopify.com/s/files/1/0440/6516/1366/files/que_es_el_enlace_glucosidico.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_off00006198.bin
d1df2c2f157d0ae7b9500e2fb3811f0205024268e87f56ed55ec09c4461a937c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6198 5472 bytes
font_01_sfnt_off00007424.bin
79bbb0629660732bdf12bb9bfea5dfb0e34b8cb39bceff2be0c16de5ec426d5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7424 10212 bytes

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