Malicious PDF — malware analysis report

Static analysis result for SHA-256 d91312ada1c7836f…

MALICIOUS

PDF

34.8 KB Created: 2020-09-01 17:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ce77cc2acf59bd59a91ccbecb1d08dd SHA-1: c68a511bc889e1c726ec99897ae2a9baaefcde1f SHA-256: d91312ada1c7836fd0e90643c48068cf2f7d734070ae49b70b36ce4da91671b2
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, which is characteristic of a link farm designed for SEO manipulation or to host malicious content. One critical heuristic identified a link to known malicious redirector infrastructure at `ttraff.ru`. The document body itself is heavily obfuscated but contains the same URLs, suggesting a deliberate attempt to direct users to external sites.

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.ru/wix?keyword=biafra+national+anthem+song
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/chucky_full_movie_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/nomenclature_of_alkanes_and_cycloalkanes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4602/files/ranokimo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5948/6626/files/mastering_business_intelligence_with_microstrategy_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/9675/0742/files/64671077578.pdf
    • https://static.usrfiles.com/ugd/07625c_b7285f93359549879eb05e3c2493ca0b.pdf
    • https://static.usrfiles.com/ugd/0c4177_37a2cdeaf5fa45b797f1231640f8a2ac.pdf
    • https://static.usrfiles.com/ugd/b9801a_c1bd4fa02e71471b9cb1d78a2e29d264.pdf
    • https://static.usrfiles.com/ugd/07625c_138dc1cf40734846bc089335e39fe7de.pdf
    • https://static.usrfiles.com/ugd/affb4a_9bdd802a5c7c4cb59c805b40551e1c26.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/7390775150.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2819/files/vavodoguso.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/zadorelozigaligotibivi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.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_off00004bf9.bin
567c18ed4da0153254eb16519683b50fa12a7805f328a62426c01cc3612add8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF9 5232 bytes
font_01_sfnt_off00005d9a.bin
727ab56af62aedeaab6ac1428cb012c4c312f84fc9d4e9e9508106a01646f2ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9A 9828 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.