Malicious PDF — malware analysis report

Static analysis result for SHA-256 8291d1c5d7e996d0…

MALICIOUS

PDF

45.7 KB Created: 2020-07-30 22:52:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b7dacd64103d6f62b28e9339618ea2d SHA-1: 6ac2d5d35d85cc1784be7b1f04517ce4ded2a6f8 SHA-256: 8291d1c5d7e996d07d0ba187745e69f8c2f95eee4a12e6c0b91b65914ee1d5b9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links redirects to a known malicious domain, ttraff.com, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains keywords related to "defense authorization act 2020 pdf", likely a lure to entice users to click the malicious 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=defense+authorization+act+2020+pdf
    • http://files.langleycyberpatriot.org/uploads/1/3/1/4/131453588/lafowowifosaz.pdf
    • http://files.foxchapelnewcomers.org/uploads/1/3/1/4/131407734/xatoxerejafej.pdf
    • http://files.decodingdyslexia-az.com/uploads/1/3/1/3/131398334/a3a87.pdf
    • http://files.millermommy.com/uploads/1/3/0/7/130775768/6235654.pdf
    • https://cdn.shopify.com/s/files/1/0433/3119/0952/files/kafakumibexazul.pdf
    • https://cdn.shopify.com/s/files/1/0432/2181/1362/files/60082772008.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1348/files/xusij.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/jetaxatupop.pdf
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/zinowegeriperibore.pdf
    • https://cdn.shopify.com/s/files/1/0429/6219/0489/files/sulatixilitikefuziruvepok.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/melinebimitar.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/xidujetimadi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/busidizo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5311/2735/files/48015993541.pdf
    • https://cdn.shopify.com/s/files/1/0439/2452/1128/files/19556922557.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/depugug.pdf
    • https://cdn.shopify.com/s/files/1/0437/3023/9642/files/sufiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/lukimupodebu.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_off0000736e.bin
cd48934cd4499f4eb127af30d566204c04e8e8bd75d3d853f1ea309562b6e8a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x736E 5416 bytes
font_01_sfnt_off000085da.bin
bd3f8da64d49ef4fce1cc278da32fefb383a4ed5e5fd84fcd07fe01cedcc6860		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85DA 10404 bytes

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