Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eea116ba903738c…

MALICIOUS

PDF

45.0 KB Created: 2020-08-16 13:08:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 401da3746f9fbfa19103fc2fb082c310 SHA-1: a9949ede2ca958b0eb7f5a6dd2ed5db0451ceac6 SHA-256: 3eea116ba903738c2592b4abaa7225c5e47f14eb016324424456dda3528eba35
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious domains, and one specific URL is identified as a malicious redirector. The document body, though heavily obfuscated, contains the primary malicious URL, suggesting an attempt to trick users into visiting a potentially harmful site. The presence of numerous PDF links indicates a link farm or SEO poisoning tactic.

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/pify?keyword=fiery+furnace+arches+guided+tour
    • http://files.turncoatmenswear.com/uploads/1/3/0/7/130776230/bufobikubusejigugiwe.pdf
    • http://gigege.hamiltonpiano.org/uploads/1/3/1/1/131164250/xejalezeraw.pdf
    • http://vepalefi.pmmfisher.com/uploads/1/3/1/1/131164439/danidefenuki.pdf
    • http://files.shamanic-training.com/uploads/1/3/1/4/131406449/lavibux-kovuv-xabito-mepibazubu.pdf
    • http://vexixo.iriscleaningservice.com/uploads/1/3/0/8/130874082/talonune.pdf
    • https://cdn.shopify.com/s/files/1/0450/3745/3470/files/antigenos_febriles_interpretacion.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6261/files/19286335638.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/17626478652.pdf
    • https://cdn.shopify.com/s/files/1/0433/9394/1671/files/58561999133.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/44352726403.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/sunefufoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/9670/2104/files/nubifufa.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1271/files/54245764147.pdf
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/probability_concepts_in_engineering_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/difalikofaxebinub.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_off00006fc1.bin
764d914da18d2df15154978d783344f4fcd8992e7863e92deb6da9e0860d80c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC1 5308 bytes
font_01_sfnt_off000081d1.bin
fd520da0c5d473578decb35328680371b927876835318aacbe244fb1609abb26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81D1 11004 bytes

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