Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce421c66710d335…

MALICIOUS

PDF

48.1 KB Created: 2020-08-29 06:56:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c141c099114a6454110ec4f4bcb693d SHA-1: bc78c4aa6c4f2542462ecf244e97f8da97a82e9f SHA-256: 1ce421c66710d3356fe9d4cf44e523f4f05b7e6cf23fd10dec9d9c117173f8f4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which points to a URL designed to trick users into downloading software. The document body also contains the same URL, reinforcing its purpose as a lure for potentially unwanted or pirated software. The presence of numerous other PDF links, while mostly benign, suggests a link farm strategy to improve search engine visibility for the malicious content.

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/wix?keyword=descargar+autocad+2014+ingles
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.pdf
    • https://cdn.shopify.com/s/files/1/0438/2264/5408/files/hunger_games_book_1_read_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/nutri_ninja_900.pdf
    • https://cdn.shopify.com/s/files/1/0438/8998/3640/files/40361099876.pdf
    • https://static.usrfiles.com/ugd/b8c837_446338321e9c404c8df91cf8cb58e0c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e68f3ff76aa43c089336ca96bb625f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a10ce090e854ed3947ec2c181d10032.pdf
    • https://cdn.shopify.com/s/files/1/0438/2693/8018/files/bewiv.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8131/files/61316903275.pdf
    • https://cdn.shopify.com/s/files/1/0457/4448/8604/files/21973350165.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/cassava_farming_and_processing_business_plan_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0432/5965/8398/files/amablesser_mlindo_the_vocalist_video.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/babejekek.pdf
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/26590849448.pdf
    • https://cdn.shopify.com/s/files/1/0432/1899/3320/files/megonuvizesuboloka.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a85.bin
5cdb5d6bfdbfeaf92308fff37bf82f0caddb137760b992710faf63a75056dd80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A85 4940 bytes
font_01_sfnt_off00007bcf.bin
1161a485e090ed36b33456299cbeb1028e1095a6e985da14562b8dcd2b5d8a18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCF 5520 bytes
font_02_sfnt_off00008ea9.bin
0a917751d3757d7afb57b343774a2eda16ca25f7f1e4e0a4d85869676e51cc81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA9 10868 bytes

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