Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d43185d31251f1e…

MALICIOUS

PDF

43.8 KB Created: 2020-08-07 14:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65712d45ce54770d8ef12f6d999ed047 SHA-1: 6bc94e76abbb1fac013005dcc559700ebf78d240 SHA-256: 2d43185d31251f1e01f986a9ca55e375049f310bdaa75775bcc116d1ce586a49
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, disguised with text suggesting it is a guitar chords guide. The PDF also contains a mass link farm pointing to numerous Shopify URLs, likely for SEO manipulation or to host further malicious content. No scripts were extracted, but the primary malicious action appears to be the redirection via the embedded link.

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=beginners+guide+to+guitar+chords+pdf
    • http://files.amainstreetchristmas.com/uploads/1/3/0/7/130739155/0c103a54388.pdf
    • http://togawugu.ahavattorahla.org/uploads/1/3/2/7/132712207/zunisawipadijazor.pdf
    • http://files.ctmeetingspace.com/uploads/1/3/1/1/131164159/zedax.pdf
    • http://files.iamlegacy.net/uploads/1/3/2/7/132740435/8245398.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/64495740485.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/63874947383.pdf
    • https://cdn.shopify.com/s/files/1/0431/5712/7336/files/dekafotunodizujofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4188/1254/files/mebigovoduvako.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6088/files/aptitude_test_for_interview_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/83933514912.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/45360447123.pdf
    • https://cdn.shopify.com/s/files/1/0437/4927/7845/files/case_study_of_urban_design.pdf
    • https://cdn.shopify.com/s/files/1/0439/9644/6878/files/dovidu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5877/files/digavozowoxoranuladi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4931/9577/files/beginner_english_words.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5460/files/33358502323.pdf
    • https://cdn.shopify.com/s/files/1/0437/2401/3722/files/activity_diagram_symbols_and_notations.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_off00006cda.bin
8839deb0f481901548ae038804d6868ea8810f95340e98512d8e645a8704f554		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDA 5432 bytes
font_01_sfnt_off00007f56.bin
a58d2d8e1f5f630f0f7caf355f32ecc030f0117a80003fbd7831a85f8fb4fecd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F56 10076 bytes

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