Malicious PDF — malware analysis report

Static analysis result for SHA-256 240194281bd1c0bb…

MALICIOUS

PDF

74.3 KB Created: 2020-08-18 23:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 532a69f7cd6a50a7862543eaa40608d0 SHA-1: d64f12495a796660b981fea561c4212879d81e14 SHA-256: 240194281bd1c0bbeddea968d9d9d05207dc749d4a5dda283e373340ae8ac893
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=informant+and+respondent'. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to this malicious site. The presence of a PDF link farm heuristic further supports the malicious intent of distributing links, likely to further a phishing or malware campaign.

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=informant+and+respondent
    • http://webulux.cosmogonyart.com/uploads/1/3/1/3/131378814/4031700.pdf
    • http://kigivuv.carissakarner.com/uploads/1/3/0/9/130969173/senivugumedope.pdf
    • http://files.first-glbr.org/uploads/1/3/1/3/131381804/rofupulako.pdf
    • http://gotod.hausonthehill.pub/uploads/1/3/1/3/131383646/podixulitid_letetakuvum_sorexuva_donajofedajumom.pdf
    • http://files.chenyy0527.com/uploads/1/3/2/7/132712139/lilogabewojumob.pdf
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/scope_and_value_of_business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0429/9256/6435/files/bubble_sort_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/impact_of_globalization_essay.pdf
    • https://cdn.shopify.com/s/files/1/0438/8261/0843/files/simple_sql_queries_with_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/aranjuez_guitar_piano.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6648/files/ropajoso.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/17111905214.pdf
    • https://cdn.shopify.com/s/files/1/0433/9793/9349/files/13732423595.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/gonawijitu.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_off0000df61.bin
720fe0a993c5ea181b5274a2740f9f8c991a20e7ec5e966786542a5f9830df92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF61 5092 bytes
font_01_sfnt_off0000f090.bin
4232f45f38c65d3b4afefb3004eae9535d51a10bcc60ff028ad92b3bfc001725		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF090 13512 bytes

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