PDF malware analysis — malicious · ee91d8bb7d503e12

MALICIOUS

PDF

46.6 KB Created: 2020-07-11 17:25:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 435fe7a2b81bff0ce5a1827b851d48f5 SHA-1: 777d86902479ea971d3743531e91d26674788134 SHA-256: ee91d8bb7d503e12663065909eb7994c882c80ff6cb585812b37c1b877dcfe76

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily corrupted, contains the URL https://ttraff.cc/wb?keyword=how%20to%20speak%20english%20fluently%20book%20pdf, which is the primary indicator of malicious intent. This URL likely leads to a phishing or malware distribution site. The presence of numerous other PDF links suggests a broad distribution effort.

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/wb?keyword=how%20to%20speak%20english%20fluently%20book%20pdf
- http://files.naturalartgardencenter.com/uploads/1/3/1/4/131453084/bekamaz-xujediviv-jimuvebodak.pdf
- http://files.skirrowdesign.com/uploads/1/3/0/7/130775154/fazefudusev.pdf
- http://files.luxurytophomes.com/uploads/1/3/1/1/131164383/sotov.pdf
- https://zefasizubora831696882.files.wordpress.com/2020/07/32844440791.pdf
- https://xefuwen.files.wordpress.com/2020/06/28313355457.pdf
- https://vexekube.files.wordpress.com/2020/06/pijetuxaregijuvoludojevis.pdf
- https://naxedanu.files.wordpress.com/2020/06/31500002097.pdf
- https://fozanetawivi.files.wordpress.com/2020/06/zajibodisinidarejib.pdf
- https://vebujeko.files.wordpress.com/2020/07/36656982099.pdf
- https://figosita.files.wordpress.com/2020/07/88242960018.pdf
- https://zemajuku.files.wordpress.com/2020/06/xunefuzitagugeponeki.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
- https://cdn.shopify.com/s/files/1/0431/2514/5760/files/78294040282.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
- https://cdn.shopify.com/s/files/1/0429/6874/4087/files/2821486941.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60801944673.pdf
- https://cdn.shopify.com/s/files/1/0433/8506/1541/files/25510445294.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdf
- https://cdn.shopify.com/s/files/1/0427/9202/6271/files/61795337942.pdf
- https://cdn.shopify.com/s/files/1/0430/6350/9141/files/15058454691.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_off000077f9.bin` `ac16d869e9ef85c8afb6daea646ebcc44289c0ab3225e17edc40e10d48a0c6b3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x77F9	5448 bytes
`font_01_sfnt_off00008a8d.bin` `8fae944870eb471806eb9bf29be6e7fe8b09582ac45cf8d98744e60a47214c33`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8A8D	10100 bytes

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