PDF malware analysis — malicious · 8d16b19596fbe90e

MALICIOUS

PDF

45.3 KB Created: 2020-09-06 02:17:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 472f3c107c5f76ba571150209e2b2b02 SHA-1: 95c3fc5b9bbd6e72876e679dff9671cf66ed81f4 SHA-256: 8d16b19596fbe90e14f30cabb8a6fb553b6d5379a83992c9801411d0fbd6402b

160 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a malicious redirector link disguised as a lure for 'Chrome os recovery software'. This is a common social engineering technique to trick users into visiting malicious sites. The document also contains a large number of external PDF links, many pointing to Shopify, which is often used to host benign content but in this context likely serves to obscure the malicious redirector. No scripts were extracted from this sample.

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.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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.club/wix?keyword=chrome+os+recovery+software
- https://cdn.shopify.com/s/files/1/0456/4857/6679/files/rogulofowagotol.pdf
- https://cdn.shopify.com/s/files/1/0429/5337/5897/files/73142125722.pdf
- https://cdn.shopify.com/s/files/1/0436/1850/0765/files/derukimopen.pdf
- https://cdn.shopify.com/s/files/1/0431/3025/7568/files/label_human_heart_worksheet.pdf
- https://static.usrfiles.com/ugd/b8c837_5f8358369e3c4c76b7e1d3a4c201b95e.pdf
- https://static.usrfiles.com/ugd/1e533a_7653b5b79d08460f9156b79c4823445d.pdf
- https://static.usrfiles.com/ugd/436160_0db79e9133fd4a729a73e12007b4af52.pdf
- https://static.usrfiles.com/ugd/7aabb2_b79278f773784cbe81ea7054a622f2ed.pdf
- https://static.usrfiles.com/ugd/ce77c6_d55b2337ae844a98b22adff319bcbe37.pdf
- https://static.usrfiles.com/ugd/c0a468_5ba489d26fd24c10a068f50fc8ab7b77.pdf
- https://static.usrfiles.com/ugd/b8c837_f5b4b82739394ef4bb6a35ed2618f455.pdf
- https://static.usrfiles.com/ugd/9ec29b_d25bfe05f6e448829c5461f6b53ec1d2.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_off0000661f.bin` `9eb1c07fba64a2f8dcdac0a8966159dd82c20cf2f6c8a7146ec78bcc9be1e02d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x661F	5000 bytes
`font_01_sfnt_off00007736.bin` `16595c259d64aed63ec4c46b189a90f45a919700303452e43f74e388cf80a1f7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7736	10296 bytes
`font_02_sfnt_off00009a83.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A83	4324 bytes

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