Malicious PDF — malware analysis report

Static analysis result for SHA-256 9504584516940ead…

MALICIOUS

PDF

45.3 KB Created: 2020-08-17 00:00:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f7e4f2362d7b3405eb60bd3584a5f5d SHA-1: 35a9fc254f1d15c2ce76b69bf18a70dc38bbf048 SHA-256: 9504584516940eadf6b83f0c9637b546defdcc4d614711335df0c93a5f7fafd3
160 Risk Score

Malware Insights

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

The PDF file contains a lure related to remote support tools and a link disguised as an educational worksheet. This link, 'https://ttraff.com/pify?keyword=going+to+vs+will+worksheet+with+answers', is identified as a malicious redirector. The document also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. The primary intent appears to be directing users to malicious infrastructure via a deceptive link.

Heuristics 4

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/pify?keyword=going+to+vs+will+worksheet+with+answers
    • http://leponus.institutgenou.com/uploads/1/3/0/8/130874359/pubasokuse.pdf
    • https://cdn.shopify
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/79066020965.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/5086193828.pdf
    • https://cdn.shopify.com/s/files/1/0433/2896/2715/files/kodefubolevev.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9941/files/army_class_b_uniform_setup_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/motorola_sbg6580_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/gimeriporinuwafasodojuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/1448/7190/files/87453075983.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/nirenotanokipez.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006686.bin
db974a5df31f1591f996a36db384ab84e482f6ec54978c8d5d4de9684c977603		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6686 4980 bytes
font_01_sfnt_off00007780.bin
56ee89bc3400bf99c9912a5f04054d0f6765a0fa2b3d6e4ec9ef5925bf329467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7780 10136 bytes
font_02_sfnt_off00009a3e.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A3E 4324 bytes

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