Malicious PDF — malware analysis report

Static analysis result for SHA-256 92595dcf057e17d6…

MALICIOUS

PDF

41.8 KB Created: 2020-08-11 16:41:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6453d41f37a8dee2c07e3008c9582c66 SHA-1: d943d6cea39562fa95b61734b9f8356ce6b292e8 SHA-256: 92595dcf057e17d674f3a9880dda4db7e0a2020a8300c8b6b060c696968c3a60
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a tool for converting webpages to PDF. The document body also contains numerous links to PDFs hosted on shopify.com and other domains, likely part of a link farm to improve search engine ranking for malicious content. The primary malicious URL is https://ttraff.com/pify?keyword=webpage+to+pdf+chrome+plugin.

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=webpage+to+pdf+chrome+plugin
    • http://rofilipe.everygreatreason.org/uploads/1/3/1/3/131380213/lolefori.pdf
    • http://files.simplybeautifulpg.ca/uploads/1/3/0/8/130813325/ca3cc.pdf
    • http://files.classwithchris.com/uploads/1/3/1/4/131452922/lidirem_bavige_kinupepepazew_salegesabudu.pdf
    • http://files.dublinsellstrackandfield.com/uploads/1/3/0/9/130969408/boxekejopo.pdf
    • http://filop.briannasmithonline.com/uploads/1/3/0/7/130739704/c90b25751.pdf
    • https://cdn.shopify.com/s/files/1/0430/3618/0634/files/ai_neural_networks.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/zowodidabawawelemomu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/19316348082.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/33815736088.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/ielts_writing_topics_with_answers_academic.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/zafinagatamajiwemaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8472/files/ponimiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4642/8072/files/spring_framework_maven.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/84585582802.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/23320664016.pdf
    • https://cdn.shopify.com/s/files/1/0435/0846/5828/files/tojasozewapesijuk.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_off00006587.bin
581dc92d5b33561c9ab46b06e7301f66cde93622a7c02302ba94a1dadc5d1691		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6587 5544 bytes
font_01_sfnt_off00007840.bin
ac3a2430f8e8e45082219dbbaa11812d09efa306c7d9f58d5e92d016431e946f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7840 10008 bytes

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