Malicious PDF — malware analysis report

Static analysis result for SHA-256 f632eb4a86b9fdf7…

MALICIOUS

PDF

34.4 KB Created: 2020-09-03 19:15:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86c2cf83aee57fe636c0053e85d8786f SHA-1: 3a6cf6f1d986d696aaef61336cd4ee768267fdea SHA-256: f632eb4a86b9fdf71c6edda403e8d35c1145b831bafcba3a9afd3e988bdb466e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to distribute malicious content. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.club/wix?keyword=dp+for+whatsapp+friends+group++hd. While many other links point to benign Shopify domains, the presence of the malicious redirector is a strong indicator of malicious intent. No scripts were extracted from this sample.

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.club/wix?keyword=dp+for+whatsapp+friends+group++hd
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/ethical_considerations_in_social_science_research.pdf
    • https://cdn.shopify.com/s/files/1/0438/4319/0946/files/73197640027.pdf
    • https://cdn.shopify.com/s/files/1/0440/0345/9230/files/59423389267.pdf
    • https://cdn.shopify.com/s/files/1/0431/3215/8116/files/janedafolulejaxaviteweri.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/94384612588.pdf
    • https://cdn.shopify.com/s/files/1/0435/6780/8667/files/muguburiti.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1c7cfc2765d4b3e99fc23b3c95c69ae.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_6c6c511effbf47ea824a0a7b1221eb1d.pdf
    • https://static.usrfiles.com/ugd/5b5da7_241bb1b8d43a4c028256998198b3dd80.pdf
    • https://static.usrfiles.com/ugd/b8c837_29b230b14f80446b9a0c7516f3789abc.pdf
    • https://static.usrfiles.com/ugd/0c60a0_f0c1ec9b84ad408cbf4b22f3cb1db054.pdf
    • https://static.usrfiles.com/ugd/dbbfd0_782ae011de3f472583bfde591b474aba.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_off00004b3e.bin
8866b2fe85a5f0ea3c5ad037edd91baaee1d6fb2497f5ead823f34323292a16a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B3E 5360 bytes
font_01_sfnt_off00005d90.bin
8b8ef7f8b4beb3055df34cf63834a8479c775dd82bdcfd6063b1d3e2e246b693		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D90 9264 bytes

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