Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20828cf1912ff6e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-10 09:33:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d0b1203bd217b26011faa35e0b20952 SHA-1: ef764dd253c4da36647e94dc6ed44f360a6cc887 SHA-256: c20828cf1912ff6e908a3ffb31792def083ba10c9b02125dccf5991db7281f79
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors, indicating a phishing or malicious redirection attempt. The document body, though partially corrupted, includes a URL that is also present in the heuristics, suggesting it's a primary lure. The presence of numerous external PDF links, including one to a redirector, strongly suggests a malicious intent to drive traffic to potentially harmful sites.

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.ru/pify?keyword=penanganan+orang+pingsan+pdf
    • http://files.feedthewobbegong.com/uploads/1/3/0/7/130740062/xelikagevowud-sazewurixavigi-mojufovo-leduledaza.pdf
    • http://files.grandmaceilshouse.com/uploads/1/3/1/4/131408529/92347f03614c5.pdf
    • http://files.naunavs.org/uploads/1/3/1/6/131637553/cbef182d76258b.pdf
    • http://penekitup.newenglandinjectors.com/uploads/1/3/0/7/130739553/zanelefurin.pdf
    • http://files.artizaninternational.com/uploads/1/3/0/7/130739593/nipekoke.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1175/files/assembler_des_documents_en_un_seul.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5229/files/96445241642.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/7054163456.pdf
    • https://cdn.shopify.com/s/files/1/0433/1569/1678/files/18843296274.pdf
    • https://cdn.shopify.com/s/files/1/0434/8978/8070/files/adenoiditis_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/soginenumimajixuvi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9660/4825/files/series_7_kaplan.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/jvc_everio_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9742/4026/files/dogolu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/podinabofotaluram.pdf
    • https://cdn.shopify.com/s/files/1/0432/5939/6254/files/19266281352.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_off00006f78.bin
4e6a386cd92784134fe4f6bacd43ca5247805800add5c844345982081b35fdb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F78 5176 bytes
font_01_sfnt_off00008124.bin
79896c452907c008f3c5f2c8ddc8c2ce99d98a32f4bbaf61682e40be6324b006		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8124 10096 bytes

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