Malicious PDF — malware analysis report

Static analysis result for SHA-256 d208b13eb919067b…

MALICIOUS

PDF

37.6 KB Created: 2020-07-26 18:39:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8806fcab2a2f72605f5a8d2a421368a3 SHA-1: 35f59b433cb7a1afd8af4d0b6ac35bbf31ecde79 SHA-256: d208b13eb919067ba6dd38b3f4d71fcea281113d4f6d8dd5f4fe665018ae78c5
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a mass of external links, likely for SEO manipulation or to host further malicious content. The primary malicious URL identified is ttraff.com, which is used in conjunction with keywords to appear legitimate. 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=design+engineering+sound+damping+sheet
    • http://files.oakmeadowscwc.com/uploads/1/3/1/3/131383548/xerivejox.pdf
    • http://files.avistonlegion.com/uploads/1/3/2/8/132814097/412833.pdf
    • http://files.heerlijkharen.nl/uploads/1/3/0/8/130814101/2fafd9b8c5fa1f3.pdf
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/82644046463.pdf
    • https://cdn.shopify.com/s/files/1/0434/8048/1958/files/87294887196.pdf
    • https://cdn.shopify.com/s/files/1/0428/5959/3894/files/83986388907.pdf
    • https://cdn.shopify.com/s/files/1/0429/0235/6127/files/91809659805.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/sorugilejumazizepesudi.pdf
    • https://cdn.shopify.com/s/files/1/0440/1908/9566/files/kunedurugifopujipolofodu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/41567369443.pdf
    • https://cdn.shopify.com/s/files/1/0434/1415/9521/files/54068279803.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/xuwikug.pdf
    • https://cdn.shopify.com/s/files/1/0432/3583/6059/files/63268962874.pdf
    • https://cdn.shopify.com/s/files/1/0427/4274/3207/files/34842438784.pdf
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/64446033273.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/
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/sorugilejumazizepesudi.p

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005595.bin
3d9d08006ee4106f426b302831be19720675a5475306c47c2a35253d36392f63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5595 5220 bytes
font_01_sfnt_off00006723.bin
253e87b08171d6d5b61824a6b0e20a54ccf753e0c88c1d292807a452559271a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6723 9576 bytes

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