Malicious PDF — malware analysis report

Static analysis result for SHA-256 da163d18810abb5b…

MALICIOUS

PDF

50.5 KB Created: 2020-08-06 13:15:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6114de3d60feb7d22217124b549feb0a SHA-1: 301e5fa100efeae25c2eb054b46bcb6c8ade4249 SHA-256: da163d18810abb5b117143adf269f137d7257fdccb530a4f3059392c46378ad0
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to appear as a summary of a self-help book, but the primary link redirects to a known malicious redirector. This indicates a social engineering tactic to lure victims to malicious infrastructure. The document itself is generated by wkhtmltopdf, suggesting it was programmatically created to host these links.

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=breaking+the+habit+of+being+yourself+summary+pdf
    • http://files.kathryn-riding.com/uploads/1/3/1/6/131637631/f7a0a8b1.pdf
    • http://files.jackblairgray.com/uploads/1/3/1/3/131384018/eede518175.pdf
    • http://files.armycadetsofamerica.com/uploads/1/3/2/8/132814119/c5737155ab621.pdf
    • http://files.usedflypress.com/uploads/1/3/1/4/131406610/nuzomamexisebe-lapuwiruxifir.pdf
    • https://cdn.shopify.com/s/files/1/0435/8530/6782/files/73842534685.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/72362805269.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sopituwoxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/rasipitut.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/felujamikuviwaxenogowewod.pdf
    • https://cdn.shopify.com/s/files/1/0435/5047/4399/files/hospice_vs_palliative_care.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0020/files/88969856318.pdf
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/bejeweled_box_re2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12509012650.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/telisupuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/44554728747.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_off000077cd.bin
09bfaa474e4a74989a8f4d0085d52dbcacd446d9ddec6ce8fbe99724ebd94050		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77CD 5692 bytes
font_01_sfnt_off00008b04.bin
4af0da416495375df07a1fee1bb1dc5264f4f7e0fe3a55886ea34ee7ef818142		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B04 10296 bytes
font_02_sfnt_off0000ae2d.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE2D 4324 bytes

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