PDF malware analysis — malicious · 937ada0fc3c7b2cf

MALICIOUS

PDF

41.1 KB Created: 2020-07-28 17:13:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a8c51c96f16c424212d16b4be84d6f1d SHA-1: 58a60e5874dd1a2532a3a65a426f404d293503f7 SHA-256: 937ada0fc3c7b2cf8c5b5ca3d957ceef789e082c4185175014ddcd4aa9586a48

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.com/pify?keyword=design+essentials+honey+curl+forming+custard', is identified as a malicious redirector. The presence of a 'Visible LOLBin command execution instruction' heuristic suggests that the PDF may also contain embedded commands or scripts designed to execute malicious code, potentially leveraging tools like PowerShell.

Heuristics 4

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.
Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND

Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
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+essentials+honey+curl+forming+custard
- http://files.moxiechattanooga.com/uploads/1/3/0/7/130740138/1935178.pdf
- http://files.raquelmeraki.com/uploads/1/3/2/7/132740860/3354846.pdf
- http://files.kypdx.org/uploads/1/3/2/7/132710690/4346933.pdf
- https://cdn.shopify.com/s/files/1/0432/7309/3288/files/rojebizarorizajefipugivuz.pdf
- https://cdn.shopify.com/s/files/1/0437/5927/2090/files/fanedif.pdf
- https://cdn.shopify.com/s/files/1/0433/8280/0542/files/tilajemirazeni.pdf
- https://cdn.shopify.com/s/files/1/0429/5560/4121/files/fezuwugovekofokenev.pdf
- https://cdn.shopify.com/s/files/1/0432/1335/7211/files/sadubojunupekaxitamepan.pdf
- https://cdn.shopify.com/s/files/1/0430/6577/0135/files/sokomirulo.pdf
- https://cdn.shopify.com/s/files/1/0428/5808/6556/files/3591892029.pdf
- https://cdn.shopify.com/s/files/1/0429/6802/3194/files/foxunakisu.pdf
- https://cdn.shopify.com/s/files/1/0431/3228/9178/files/64081157271.pdf
- https://cdn.shopify.com/s/files/1/0432/5572/6238/files/judomegebobekizugumi.pdf
- https://cdn.shopify.com/s/files/1/0431/7088/9896/files/fivamej.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.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/1/0432/1335/7211/files/sadub

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006142.bin` `463eb0870f01e8bf59852c2b653091fdf101d5fbd4b70a1f1286b95113199f0a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6142	5420 bytes
`font_01_sfnt_off00007384.bin` `a239fcdfce0e6f7cbed2e5495aa1d379470198ffdf1d82ac930d9fcbab8e93e9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7384	10284 bytes

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