Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07e1be565271cc8…

MALICIOUS

PDF

45.4 KB Created: 2020-07-28 14:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fc95b199fcc796a53bfa129f33e0282 SHA-1: 0a08ed7b927fad0829b335e48eb9ce0a667aac48 SHA-256: b07e1be565271cc8ce0bbc00972041dbb94016a404a7d9b047a906195e5699a7
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to a weather report. The primary malicious link identified is ttraff.ru, which redirects to further content. The presence of numerous Shopify-hosted PDF links suggests a link farm designed for SEO poisoning to attract victims.

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=klosters+switzerland+weather+report
    • http://files.stmarymagdalenewpg.org/uploads/1/3/1/8/131856531/badifa.pdf
    • http://files.mylifetransitions2day.org/uploads/1/3/1/3/131380627/8347924.pdf
    • http://files.sistahspacemidwifery.com/uploads/1/3/0/8/130814342/tobebo.pdf
    • http://files.barryjayjewelers.com/uploads/1/3/0/8/130814492/be91b.pdf
    • http://files.normcrouchphotography.com/uploads/1/3/0/7/130740429/73d3ef03754e132.pdf
    • http://files.stmarymagdalenewpg.org/uploads
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/makebajubajamakifof.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7108/files/59962787408.pdf
    • https://cdn.shopify.com/s/files/1/0438/0845/6865/files/7298056558.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutiga.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/pevepebuzunipixomeporet.pdf
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/wunixuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1357/files/fafebilovegusuposu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuvitew.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/94370373421.pdf
    • https://cdn.shopify.com/s/files/1/0435/5286/6455/files/jowafitoz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/nebomegolozasedafararo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9661/2768/files/72277331841.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_off0000728e.bin
4578bf71830a9e11663552a2e0be4917ef9b1025d44450b272c6c41e4f2e93e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x728E 4944 bytes
font_01_sfnt_off00008367.bin
f09a1dff9d64c70433e7c0af51319a32705bf46e4f8ad7f1f306428d13f1a78b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8367 10784 bytes

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