Malicious PDF — malware analysis report

Static analysis result for SHA-256 c12f548dda660bf4…

MALICIOUS

PDF

51.3 KB Created: 2020-09-20 16:49:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: acfcdb93f77a768465c4d37cee7543d7 SHA-1: 6c2857722b0c682791447d647c2f9e70b65c60a6 SHA-256: c12f548dda660bf44053c5211469bfff24172b23373d73626f087dcc3bb53668
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=intermediate+microeconomics+2+notes'. Additionally, it exhibits a PDF SEO link farm pattern, suggesting an attempt to distribute malicious content. The presence of a 'download button' lure further supports the malicious intent.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=intermediate+microeconomics+2+notes
    • https://cdn.shopify.com/s/files/1/0436/6408/1046/files/95582351651.pdf
    • https://cdn.shopify.com/s/files/1/0431/9304/1059/files/how_to_change_minecraft_resolution_optifine.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0839/files/16940621391.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/missouri_odometer_statement.pdf
    • https://cdn.shopify.com/s/files/1/0434/6865/2697/files/81308300277.pdf
    • https://33949229-1457-45dc-9ba2-409a7bb0ac31.filesusr.com/ugd/b3318b_68f477a2d0ab48b8a446e38e57da45e8.pdf?index=true
    • https://b43446e3-a37d-4d73-93b2-ed79b95b3cf6.filesusr.com/ugd/8c0e65_7fd83f24c15944ce988a1b325c6b085e.pdf?index=true
    • https://3e50d69b-a8b6-4bc9-9dfe-85accf114464.filesusr.com/ugd/921909_43fdfb3f2fd6498b87e91f0888704f51.pdf?index=true
    • https://a65a5785-2f58-48b1-9570-5a0ba7ad1941.filesusr.com/ugd/1cfe37_086318fd75ae442abaf3376fcace22f2.pdf?index=true
    • https://a56144a9-6984-40fe-b3d9-c67a937c06d2.filesusr.com/ugd/9ec29b_c070a8a0f8b54d6780a8bdc2d4b19639.pdf?index=true
    • https://87f8e679-2673-4d12-81c2-9bd030e07d2d.filesusr.com/ugd/d017d5_26e988f26fdb4b039817e7c3f054586f.pdf?index=true
    • 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/
    • https://cdn.shopify.com/s/files/1/0432

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b9d.bin
601956361c1e4829a2894302f0555e73303263b3770880476ae695fe1fb246b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9D 5120 bytes
font_01_sfnt_off00009ce8.bin
fb3d0a6de9314fc419c1cfbd84ffcf10e23da5c4e942891a95422357de91c0e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE8 10404 bytes

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