Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca3778b1f4e2b01…

MALICIOUS

PDF

40.3 KB Created: 2020-08-18 16:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91cd6ecdaa9340907c3fd44638caaa02 SHA-1: e0df112666603b9c839e2e274830cf7050c13af3 SHA-256: bca3778b1f4e2b01942ddb822cb86167b1407eb53c31f6bcd4e2e2175042ec5a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to potentially malicious redirectors or SEO link farms. The document body text, though partially corrupted, contains the string 'Envato templates psd' and the URL 'https://ttraff.cc/pify?keyword=envato+templates+psd', suggesting a lure to download or access template files which redirects to malicious infrastructure. The presence of numerous external links, including those hosted on Shopify, indicates a link farm strategy to potentially distribute malware or phish for credentials.

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=envato+templates+psd
    • http://files.melbourneh2oswimmingclub.com/uploads/1/3/1/3/131398334/8244087.pdf
    • http://files.fhcamd.org/uploads/1/3/1/6/131637034/5932877.pdf
    • http://xivotuti.inlandnwscots.org/uploads/1/3/1/8/131856643/suxujatetudejuw.pdf
    • http://files.sohotvnews.com/uploads/1/3/1/4/131438308/lijogagukojamo.pdf
    • http://files.kentuckyexpresstrack.org/uploads/1/3/0/8/130874115/bibumilaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/0730/9984/files/combine_multiple_excel_files_in_one_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0438/4768/0162/files/zusukapez.pdf
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/28842988655.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6330/files/wamutiket.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/patuvimabitugex.pdf
    • https://cdn.shopify.com/s/files/1/0430/3136/3747/files/zutepidubinorom.pdf
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/92879348183.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/banking_industry_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0988/files/git_hub_login.pdf
    • https://cdn.shopify.com/s/files/1/0436/5778/9593/files/country_code_39.pdf
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/52820726154.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/data_science_projects_with_python.pdf
    • https://cdn.shopify.com/s/files/1/0436/9481/7435/files/18403740865.pdf
    • https://cdn.shopify.com/s/files/1/0429/8234/2815/files/89919958143.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_off000061be.bin
a1d7465fb6db0fd90c491601d65e9ddd7a51157b81760dbfe54886d68e25d8a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BE 5024 bytes
font_01_sfnt_off000072c8.bin
af9f70e29c6d0ba02c523be17a7f97e0ef7dfa0bfb7a8a81e729238f91a7c531		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72C8 9808 bytes

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