PDF malware analysis — malicious · 7c6cf06cd8e5cfea

MALICIOUS

PDF

114.1 KB Created: 2020-07-26 07:09:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0173c77054145dc4cbcbc98ca533d33c SHA-1: 21fb42a47ae489a849d2a95b39b9f2bb83ed162c SHA-256: 7c6cf06cd8e5cfea0d64233bd842ee8959802f3620d15a918fe5b41f54a70217

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a malicious redirector link disguised as training material. The ML classifier strongly indicates maliciousness. The primary IOC is the redirector URL, which is designed to lead users to further malicious content. The PDF also hosts a large number of other PDF links, likely for SEO manipulation or to spread the malicious content.

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.com/pify?keyword=lean+six+sigma+black+belt+training+pdf
- http://files.ren-ito.com/uploads/1/3/1/4/131483110/d686905359d71.pdf
- http://files.kristina-mazeikaite.com/uploads/1/3/0/7/130775231/6753322.pdf
- http://files.cardiologycarolina.com/uploads/1/3/0/7/130739069/6441498.pdf
- http://files.bigskywords.com/uploads/1/3/0/8/130813841/0999726961470.pdf
- https://cdn.shopify.com/s/files/1/0432/1217/7572/files/fibulazo.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.pdf
- https://cdn.shopify.com/s/files/1/0428/7981/1750/files/64667291573.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68736518606.pdf
- https://cdn.shopify.com/s/files/1/0431/7088/9892/files/19501210309.pdf
- https://cdn.shopify.com/s/files/1/0435/3789/1477/files/dumekavinafuded.pdf
- https://cdn.shopify.com/s/files/1/0429/8863/4263/files/69926707646.pdf
- https://cdn.shopify.com/s/files/1/0432/6224/7080/files/79366676475.pdf
- https://cdn.shopify.com/s/files/1/0431/9356/5342/files/suwisokexajobaneveg.pdf
- https://cdn.shopify.com/s/files/1/0432/6676/9054/files/filonokifefoviwevan.pdf
- https://cdn.shopify.com/s/files/1/0430/0426/4602/files/lugowobitowu.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54183348773.pdf
- https://cdn.shopify.com/s/files/1/0435/1095/6196/files/64396447222.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_off0001677b.bin` `e5ddcf87b984228bd2484228f52ed603eb1c939ce2f9c70404d77728b37e2272`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1677B	5368 bytes
`font_01_sfnt_off0001799e.bin` `441c6d6725c37e72a93c46ff2114f7716cb721004d5e0378280fe9471dd5f13c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1799E	13724 bytes
`font_02_sfnt_off0001a5b7.bin` `713933360072c9d59346590fad668f98c3603c6d2b72ed941ce85481f6af0b74`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1A5B7	16060 bytes

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