PDF malware analysis — malicious · 48b6957fb3fc2bea

MALICIOUS

PDF

36.8 KB Created: 2020-08-19 03:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: be0744f7e4b8ac3ddeee59fbe28f9e03 SHA-1: 7f1be83f6ec41500d447cba417b040975d208148 SHA-256: 48b6957fb3fc2beaafce731dd175a09703711416cb3f99c7f6559f755a3d0e4a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Application for employment form nz' and the malicious URL, suggesting a phishing lure. The presence of numerous external links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=application+for+employment+form+nz
- http://files.hallenelaw.com/uploads/1/3/0/8/130815009/4d0e33786d.pdf
- http://goziten.alexismariephotoanddesigns.com/uploads/1/3/0/7/130739654/sesani.pdf
- http://zuzox.kdrose.com/uploads/1/3/0/8/130874153/8272813.pdf
- http://veposin.markromangbooks.com/uploads/1/3/1/3/131398020/gisej-zoxivofonuraxu-foxeju-jisuzukob.pdf
- https://cdn.shopify.com/s/files/1/0434/8336/5528/files/aircraft_registration_form.pdf
- https://cdn.shopify.com/s/files/1/0438/1959/7981/files/80526558206.pdf
- https://cdn.shopify.com/s/files/1/0440/6122/9206/files/toravosi.pdf
- https://cdn.shopify.com/s/files/1/0431/5929/0022/files/rapuzoj.pdf
- https://cdn.shopify.com/s/files/1/0432/7912/2587/files/syntax_score_ii.pdf
- https://cdn.shopify.com/s/files/1/0433/1087/4777/files/37547512757.pdf
- https://cdn.shopify.com/s/files/1/0433/5796/2405/files/buwaw.pdf
- https://cdn.shopify.com/s/files/1/0436/1905/7826/files/fusasotapedul.pdf
- https://cdn.shopify.com/s/files/1/0430/4021/1105/files/tupilogikinekedufikizugix.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wulusiwebope.pdf
- https://cdn.shopify.com/s/files/1/0433/8152/2599/files/rodanadi.pdf
- https://cdn.shopify.com/s/files/1/0428/7302/8775/files/12520121666.pdf
- https://cdn.shopify.com/s/files/1/0432/7945/0272/files/39484718340.pdf
- https://cdn.shopify.com/s/files/1/0428/3518/1734/files/5137972047.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00005464.bin` `847022d24ec2d8085c63f88632d3ef20c9a7597674ed3252d63fee975fa378f5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5464	5124 bytes
`font_01_sfnt_off000065c2.bin` `b824b70e77cc853a927a9cac3ffa71b5fbb576475d713fddedc257bf81ec7c0f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65C2	9448 bytes

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