Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c7075c68ea4dfb…

MALICIOUS

PDF

34.2 KB Created: 2020-08-14 17:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e6723f8834478ee005c711b1b513731 SHA-1: d30efd85f437bf186d4ae1735eb6da936bf53a79 SHA-256: f6c7075c68ea4dfba52459d2f89cc2818a3bda7bb8010a255ef4bddaeb3a1ebc
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with redirectors or link farms. The document body text, though heavily obfuscated, contains a URL that appears to be a lure for movie ringtones, directing users to a malicious redirector. This suggests a social engineering attack aimed at driving traffic to potentially malicious 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=aambala+movie+ringtone++masstamilan
    • http://tisufubiw.punkrockraduno.com/uploads/1/3/1/6/131606183/8714110.pdf
    • http://nonimoki.stephaniebatemansweet.com/uploads/1/3/1/6/131636612/18002f44a.pdf
    • http://files.doublehappinessllc.com/uploads/1/3/2/6/132682970/dawunusujojolav-domomibugeka-siwaxuge.pdf
    • http://files.newportplaza-tenant.com/uploads/1/3/1/6/131607712/jasotutigibi.pdf
    • http://files.abeautifulquest.ca/uploads/1/3/0/9/130969775/14dee0126.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3259/files/29358570975.pdf
    • https://cdn.shopify.com/s/files/1/0438/1537/0912/files/wegofajapajukob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/test_1879eb6a-339e-4d45-a409-571cd94a4742.pdf?v=1594212285
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/81079403916.pdf
    • https://cdn.shopify.com/s/files/1/0431/6951/3632/files/96946504740.pdf
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/18488726896.pdf
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/fewuk.pdf
    • https://cdn.shopify.com/s/files/1/0438/4843/3829/files/descargar_certificado_de_antecedentes_judiciales_en.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/20550425906.pdf
    • https://cdn.shopify.com/s/files/1/0430/7966/3765/files/veterans_day_coloring_pages.pdf
    • https://cdn.shopify.com/s/files/1/0435/6666/1791/files/mituve.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_off000048ea.bin
e15bd4bbacd4b083e95ca10c0243dbcaf077b25ea2c399104cb114a3cdad142a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x48EA 5196 bytes
font_01_sfnt_off00005a85.bin
ab953e12dfb52e72d9f78f86c606884ec5857c7ea1235cf5f4c2448c64a03f99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A85 9764 bytes

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