Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e2fb591f88befd…

MALICIOUS

PDF

44.6 KB Created: 2020-08-13 19:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68a89cd32556ae6ad7726055a62db659 SHA-1: 4743a9f95d7bcd43eb6f53b309a57bf12dbad3fc SHA-256: e8e2fb591f88befd9432a39427b311b68051228b9ae2fe0340cecf8487133cbf
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous links, including a large farm of SEO-optimized PDF links, strongly suggests a malicious intent to lure users to external, potentially harmful, sites. The primary mechanism appears to be a link farm designed to attract traffic and possibly distribute malware or conduct phishing.

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.com/wb?keyword=vogelhaus%20sechseckig%20selber%20bauen%20pdf
    • http://files.rebelliousrheaboutique.shop/uploads/1/3/1/4/131406413/2090860.pdf
    • http://dosuzosix.nicholelreber.com/uploads/1/3/1/8/131856257/1670753.pdf
    • http://files.yunkawasiperu.org/uploads/1/3/1/3/131379612/vizarifogumawov.pdf
    • http://files.morganboardman.com/uploads/1/3/0/8/130874658/repubusotawuzanu.pdf
    • http://files.creativedatainc.com/uploads/1/3/2/7/132741397/47ab34baff.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/augusto_monterroso_microcuentos.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/tudijufezilitanepojaze.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/boatswain_mate_manual_14343a.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5018/files/sinelizobijemosa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefiwi.pdf
    • https://cdn.shopify.com/s/files/1/0437/2230/9786/files/81076631897.pdf
    • https://cdn.shopify.com/s/files/1/0432/1027/7025/files/27534117739.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/zusudemusopewomifebusotin.pdf
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/88567121214.pdf
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/29728210293.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2392/files/natirojoxafir.pdf
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/456270659.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_off00006cd0.bin
e10bb51e31f80a0ef03a4ad50a44f247b90b40904537aa27f50c45efb32bf9cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD0 5588 bytes
font_01_sfnt_off00007fbb.bin
4860884202e42c191bc7fc7facac67af8302f86a778093a6074d2f4a7b4bbaf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBB 10968 bytes

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