PDF malware analysis — malicious · e9d0548a3e228011

MALICIOUS

PDF

42.4 KB Created: 2020-08-31 05:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 800e4c002ad3706ee02f43bc734fbd3b SHA-1: 8652b2fedea99324d70cd99af1ade48cc91cf89b SHA-256: e9d0548a3e22801117526b2ed26f2f82f7d1b454ad6e934bb3fc281f8db17a7c

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=savefrom.net+helper+chrome+extension'. Additionally, a heuristic for a browser extension installation lure was triggered, indicating a social-engineering attempt. The document body also contains the same malicious URL, reinforcing the lure. The presence of a link farm heuristic suggests this PDF is part of a larger SEO poisoning campaign. 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.cc/wix?keyword=savefrom.net+helper+chrome+extension
- https://cdn.shopify.com/s/files/1/0433/5455/4533/files/57791949698.pdf
- https://cdn.shopify.com/s/files/1/0428/0126/6851/files/jekajoxinipuxisurorevipa.pdf
- https://cdn.shopify.com/s/files/1/0428/7735/4143/files/wolofapesokigefaz.pdf
- https://cdn.shopify.com/s/files/1/0434/6816/1184/files/tunoxadosufivusi.pdf
- https://cdn.shopify.com/s/files/1/0434/8208/7588/files/28633982198.pdf
- https://cdn.shopify.com/s/files/1/0428/8148/2919/files/cateterismo_cardiaco_definicion.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
- https://cdn.shopify.com/s/files/1/0429/8512/8099/files/845_406_4014.pdf
- https://cdn.shopify.com/s/files/1/0431/9716/9824/files/dubugijakenijobirunagiron.pdf
- https://cdn.shopify.com/s/files/1/0433/8896/0933/files/kebokitezerega.pdf
- https://cdn.shopify.com/s/files/1/0429/5085/2762/files/87219022873.pdf
- https://cdn.shopify.com/s/files/1/0433/7460/8545/files/my_talking_tom_free_apkpure.pdf
- https://cdn.shopify.com/s/files/1/0438/1802/5117/files/88102171222.pdf
- https://cdn.shopify.com/s/files/1/0433/8850/2174/files/42090369829.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_off0000676d.bin` `8b9521bf2f4f9cf2c9d2147a8512050ecb0369281cd915c19b1639af54bda668`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x676D	5520 bytes
`font_01_sfnt_off00007a0d.bin` `6391a34c77ce3cfb5c199fa22c74d68df35184a96e3f087f58ba578496ed4f45`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A0D	10060 bytes

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