Malicious PDF — malware analysis report

Static analysis result for SHA-256 88fd5442973809f4…

MALICIOUS

PDF

56.4 KB Created: 2020-08-02 11:38:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59457e881dca8ca689d285488fa5810c SHA-1: ed79e44e6e30e68a3d7a9f82b5f8ade3a15014eb SHA-256: 88fd5442973809f49330a98c86f69b329b6e2cee12016240316aa1e666face99
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to a known malicious redirector. Additionally, it features a large number of embedded links to other PDFs, suggesting a link farm designed to obscure the ultimate destination or spread malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=personal+finance+kapoor+pdf. 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.com/pify?keyword=personal+finance+kapoor+pdf
    • http://files.beyondtolerancewichita.org/uploads/1/3/2/6/132681634/6755461.pdf
    • http://files.hlacupuncture.com/uploads/1/3/1/6/131606257/rafinugijipiz-dinox-nuzikiz.pdf
    • http://files.erinumc.com/uploads/1/3/1/3/131398366/xofipipefezore_mufofemuxi_xemaperax_jilivaguzola.pdf
    • http://files.northpointebaptistministries.com/uploads/1/3/2/6/132681295/lulelubijakolobo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/96499543484.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9652/files/kexefi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/80828037491.pdf
    • https://cdn.shopify.com/s/files/1/0430/6577/0133/files/69955683460.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kuzizurogepibisomagin.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/xajorewagopawopikofovebef.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5236/files/2569184081.pdf
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/githut_remove_autocomplete.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zikoraj.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/66644132125.pdf
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/16676570482.pdf
    • https://cdn.shopify.com/s/files/1/0436/9262/1978/files/napufa.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_off00008efe.bin
6eddd6016698928b4c05275f228135f541982e3acc5f45bb4a96deb5065f5f46
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFE 4924 bytes
font_01_sfnt_off00009fbb.bin
96d49a9f99b879611ccc9f6ed2f1e23bd101db6cd4f7903481f1a2db2dc10572
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FBB 11236 bytes
font_02_sfnt_off0000c5fe.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5FE 4324 bytes