PDF malware analysis — malicious · e94f987946cd56cf

MALICIOUS

PDF

44.8 KB Created: 2020-08-03 04:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6047a985700f6c0cd8191618582f7596 SHA-1: c227834a84773f1ae33202a12331b42a3477121a SHA-256: e94f987946cd56cf92c235a1b9e0be997f233e78647c3316838f41008427ec60

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text fragments that suggest a lure related to "Elect document pdf". The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, many pointing to Shopify domains, likely part of a link farm to improve search engine ranking for malicious content. The primary IOC is the redirector URL.

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/wb?keyword=elect%20document%20pdf
- http://files.boslerhs.org/uploads/1/3/0/9/130969746/86575206.pdf
- http://files.robynfear.site/uploads/1/3/2/6/132681325/3154193.pdf
- http://files.knozeythetraveler.com/uploads/1/3/1/6/131607522/2d6be5f2999c28c.pdf
- http://files.buschgeotech.com/uploads/1/3/1/8/131857041/403d6c5a.pdf
- https://cdn.shopify.com/s/files/1/0434/0708/1622/files/71929158420.pdf
- https://cdn.shopify.com/s/files/1/0429/4977/1430/files/66601475515.pdf
- https://cdn.shopify.com/s/files/1/0440/8282/3320/files/90795299750.pdf
- https://cdn.shopify.com/s/files/1/0431/6758/0322/files/42098065821.pdf
- https://cdn.shopify.com/s/files/1/0439/4775/3640/files/dolofibujerevezimepo.pdf
- https://cdn.shopify.com/s/files/1/0432/4923/8178/files/linux_edit_iso.pdf
- https://cdn.shopify.com/s/files/1/0430/8097/4490/files/81173587539.pdf
- https://cdn.shopify.com/s/files/1/0430/4666/6389/files/nigovadewu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xakikalimakimoxe.pdf
- https://cdn.shopify.com/s/files/1/0432/9478/5694/files/91245370941.pdf
- https://cdn.shopify.com/s/files/1/0428/7542/0835/files/sadikenirefol.pdf
- https://cdn.shopify.com/s/files/1/0437/6644/8277/files/strtok_in_c.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000066c2.bin` `28217d949625fcef68efc35f9fd7c98080897c23db544869097427ccd03b28e2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66C2	4608 bytes
`font_01_sfnt_off00007657.bin` `6886be1bb6b80cf49640580f7cd8bbf0a7b19ae5378a75629c7c7cea03c24d62`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7657	9888 bytes
`font_02_sfnt_off00009816.bin` `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9816	4324 bytes

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