Malicious PDF — malware analysis report

Static analysis result for SHA-256 49dcab4da207265e…

MALICIOUS

PDF

44.7 KB Created: 2020-08-03 13:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: feaa4174a9426bf42340bf6e0320d24d SHA-1: 2ce5ca312edeb470d777f281395a84ffd9459387 SHA-256: 49dcab4da207265e551f6773a6f477ff87d2168c32c156d0bf61906659b4b85d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=learn+json+pdf'. This URL is presented within the document body, disguised as a link to learn about JSON PDFs. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify domains, suggesting an attempt to distribute malicious content or engage in SEO abuse. The primary malicious IOC is the redirector URL.

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/pify?keyword=learn+json+pdf
    • http://files.johnsoncitytexas.info/uploads/1/3/2/7/132712661/9c5860.pdf
    • http://files.evasound.co.uk/uploads/1/3/2/6/132695575/fubipixenumovenino.pdf
    • http://files.mybritneyspearscollection.com/uploads/1/3/1/3/131381540/09abe16173f0ae.pdf
    • http://files.greenteamforfifeanddrum.com/uploads/1/3/0/7/130738628/9270634.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/wegofug.pdf
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/kizofagoxovolefapape.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/50296171100.pdf
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/78448917095.pdf
    • https://cdn.shopify.com/s/files/1/0437/4183/9511/files/lawn_mowing_simulator_script.pdf
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/computer_architecture_ebook_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0406/6983/files/95125673355.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64238793182.pdf
    • https://cdn.shopify.com/s/files/1/0437/4659/0872/files/blackmarket_apps_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/3077776152.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97046042130.pdf
    • https://cdn.shopify.com/s/files/1/0435/9664/4511/files/sezeluzimuvunemerar.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_off00006eb9.bin
711edd8d489da79a9a9dca54f01e0a49728f7690d220d55b7fff9d860e7fcf75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB9 5020 bytes
font_01_sfnt_off00007fe9.bin
8d10f4bbcbf9c2aad1d46c192fdf4932694cad7b42a36152986bd8756b98c8cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE9 11444 bytes

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