Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6a31c953ebfdee5…

MALICIOUS

PDF

45.3 KB Created: 2020-09-02 08:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72a87f5e0245b237f3a6db385140975a SHA-1: 39c241e268c109f3b23764c9d9211daa4ace63e3 SHA-256: e6a31c953ebfdee5f901210431e4320c1e09e1fbb48e5a62addb9fead473fbad
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=ti+83+calculator++for+iphone'. The document body also contains this URL, suggesting a lure to a malicious site disguised as a search result. The file also contains a large number of embedded links to Shopify PDFs, indicating a link farm strategy. No scripts were extracted from this sample.

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/wix?keyword=ti+83+calculator++for+iphone
    • https://cdn.shopify.com/s/files/1/0469/9891/3176/files/7700634161.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.pdf
    • https://cdn.shopify.com/s/files/1/0440/5549/4806/files/jokolu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/wixufopupuwigenevoxaledib.pdf
    • https://cdn.shopify.com/s/files/1/0436/3183/7344/files/fozesejezokusixutev.pdf
    • https://cdn.shopify.com/s/files/1/0434/6036/2392/files/hourly_weekly_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/2102472718.pdf
    • https://cdn.shopify.com/s/files/1/0440/8436/3416/files/dekoxefojafefuviti.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7427/files/dodovusolipuretuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/7397/8011/files/viporusesigu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005dad.bin
2127ae8174a26c7bc918ba6ee41061164b54070d7f5f2a789ecb5ca6990e3046		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DAD 5232 bytes
font_01_sfnt_off00006f76.bin
7d1f3e6a0de31271b051b00ecfa3cfe5a5ccceffeb0fac507d54a514f538910b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F76 10312 bytes
font_02_sfnt_off000092e3.bin
672bf7f552439350afd8ae360022c37390def6c1c179b5aa420eeaeb19a564e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92E3 16228 bytes

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