PDF malware analysis — malicious · bb608588291588a2

MALICIOUS

PDF

43.9 KB Created: 2020-08-29 19:03:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0f4da1e9f1816078ef2a8c995982c930 SHA-1: b1d61ed5830b19b22c62cdcff25769f989dfd2e7 SHA-256: bb608588291588a2128b5af960abb817c0a68044236748c07ac20eb4b6e23816

168 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF contains numerous links, presented as a link farm, with one specifically identified as a malicious redirector. The document also contains a lure suggesting a browser extension or update is needed, which is a common social engineering tactic. The primary malicious URL identified is https://ttraff.ru/wix?keyword=blue+dragon+guide+heroes+guild.

Heuristics 5

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
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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/wix?keyword=blue+dragon+guide+heroes+guild
- https://static.usrfiles.com/ugd/b8c837_fb3e26e588d44a439b6545c18e965d58.pdf
- https://static.usrfiles.com/ugd/b8c837_fc25a47a265146d5aba92136afab4e3e.pdf
- https://static.usrfiles.com/ugd/b8c837_bf74f1ab28294179afd852799f9906ea.pdf
- https://static.usrfiles.com/ugd/b8c837_58cb417fc5a44158927dfaadcf54042e.pdf
- https://static.usrfiles.com/ugd/b8c837_c4b27a19a9c04f3e986963b242c21e9b.pdf
- https://cdn.shopify.com/s/files/1/0430/9290/2039/files/zutetuburimojekajexigedub.pdf
- https://cdn.shopify.com/s/files/1/0434/2457/9751/files/houston_weather_hourly_77077.pdf
- https://cdn.shopify.com/s/files/1/0432/8017/1174/files/luteduma.pdf
- https://cdn.shopify.com/s/files/1/0431/3359/9893/files/ansible_tower_plugin.pdf
- https://static.usrfiles.com/ugd/b8c837_62e7d0fc78bf44aeb11db80e0ba0244c.pdf
- https://static.usrfiles.com/ugd/b8c837_82978ccb474743e383af397d10f35d19.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_off000065dd.bin` `59305bcbfb74d1d505b5ee8c70290cfb2d2246649c6b743747801b64fd13311e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65DD	5136 bytes
`font_01_sfnt_off00007738.bin` `a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7738	1800 bytes
`font_02_sfnt_off00007fc5.bin` `1b716c1660a5d825675124ee19a8e762da4db088b2cd620bcf217660d2036ea3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FC5	10204 bytes

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