Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e9e429dbd2c3756…

MALICIOUS

PDF

58.7 KB Created: 2020-07-28 20:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cb6c058aab0be6f5b6c96511ae57325 SHA-1: a0bdeeb4487d755a05bb32c0fa7c307ba7cc0650 SHA-256: 4e9e429dbd2c3756bf822f22bf1437690b79adc847275d08f27377f8bebf16dc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to known malicious redirector infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or redirect users to malicious content. The primary IOC is the malicious redirector URL, which is likely the initial step in a phishing or malware delivery chain.

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/pify?keyword=become+the+force+pdf
    • http://files.kingtechnicalapparel.com/uploads/1/3/0/7/130739251/lopinatuzakag-kugawedogix-muzolewetop.pdf
    • http://files.lifewisegifts.com/uploads/1/3/0/8/130874128/6ab8d3.pdf
    • http://files.maximiliangoetz.com/uploads/1/3/1/3/131380606/wogatotivokobe_bewukubi_bijejeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/zamuwoturafojano.pdf
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/22855794187.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8074/files/senebuzuzo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7384/6952/files/fowidagebipivoditituvopa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1894/4665/files/poxuwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/86939327548.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/zuwusaxomaxuxita.pdf
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/1267897445.pdf
    • https://cdn.shopify.com/s/files/1/0437/6887/3112/files/70413512852.pdf
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/dopamevosaletodabipotupar.pdf
    • https://cdn.shopify.com/s/files/1/0438/4640/2213/files/gavevubokodededagimek.pdf
    • https://cdn.shopify.com/s/files/1/0435/4100/4443/files/16114159585.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/23756923701.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.

FilenameKindSourceSize
font_00_sfnt_off00009f84.bin
578642a0a22351179776077eec0b397dc3c592cf5b5fd79248834cb74d993d38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F84 4656 bytes
font_01_sfnt_off0000af51.bin
d4563d9d63b1caeda0b5e78fbcf5388c1a68a04b66978f946ec4a9326bd4552a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF51 14220 bytes

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