Malicious PDF — malware analysis report

Static analysis result for SHA-256 da1c6bc54d3d9b20…

MALICIOUS

PDF

38.7 KB Created: 2020-08-15 10:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff0385f6e665377fbf1d54a837d89479 SHA-1: 9c426820375ccf6847b53925e4e6d6253b95eef2 SHA-256: da1c6bc54d3d9b20516b3ecde8d3c93aebdbcf7dc2263127c9c1767e98462ff2
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, with one critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=peloton+app+android+tv, which is likely used to redirect users to further malicious content. The document body itself is largely unreadable binary data, but the presence of the redirector URL and the link farm heuristic strongly suggest a malicious intent to lure users to external 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.cc/pify?keyword=peloton+app+android+tv
    • http://files.greenteamllc.com/uploads/1/3/1/8/131857305/rixipomavuzadegabur.pdf
    • http://zuras.sfhillsanddrills.com/uploads/1/3/1/0/131070374/xagivopavedixewadiw.pdf
    • http://loxifiko.graciemaescookieco.com/uploads/1/3/1/0/131070858/9646407.pdf
    • http://jomexalin.majorguideservice.com/uploads/1/3/0/7/130776445/8268329.pdf
    • https://cdn.shopify.com/s/files/1/0434/0206/8131/files/jalakesitafoxuvu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0734/3779/files/arkitektura_shqiptare.pdf
    • https://cdn.shopify.com/s/files/1/0430/8339/9329/files/lubenitajigozi.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/7295536049.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/lisufifixipiwokexumudijiz.pdf
    • https://cdn.shopify.com/s/files/1/0454/6274/9334/files/spring_resttemplate_ignore_unknown_properties.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/4586961673.pdf
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/faxapijepalem.pdf
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/kopasoxakimubepimuwuwi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4460/8920/files/helter_skelter_chords.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8863/files/73009389835.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_off00005aff.bin
903c615d6612083384743f2b8da2f20bbf335ef3e35e9163349df9d594d0e7e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AFF 4836 bytes
font_01_sfnt_off00006b81.bin
ca3a8ba4e47b66ffdbc927b81539edb785d2eee82b6cbf8e540f3641097cb7bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B81 10144 bytes

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