Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1e2b3b8d3b7e5e1…

MALICIOUS

PDF

34.0 KB Created: 2020-08-29 20:46:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 946e854483f610e62ced1754dcb5317d SHA-1: 633aaf66036055f8b626fab4a05c7b85d7533e56 SHA-256: c1e2b3b8d3b7e5e18f39e8cc4da1d350e34c57440a18e1c2d0f7a7f9ef23074e
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://ttraff.cc/wix?keyword=a+crian%25C3%25A7a+e+seu+mundo is part of a malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of external links, with the first being https://cdn.shopify.com/s/files/1/0434/9162/3077/files/adolescent_anxiety_screening_tool.pdf, indicating a potential attempt to manipulate search engine results or distribute content through a link farm. 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=a+crian%25C3%25A7a+e+seu+mundo
    • https://cdn.shopify.com/s/files/1/0434/9162/3077/files/adolescent_anxiety_screening_tool.pdf
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/20993547376.pdf
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/25418569766.pdf
    • https://cdn.shopify.com/s/files/1/0429/8647/1587/files/chhattisgarh_district_map.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21659337375.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2305/files/11969259754.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/neopet_rainbow_pool.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/judiwamawot.pdf
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/lovikijotunefuwozataxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5562/files/minecraft_pe_0._12._0_beta_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7969/5517/files/getting_to_yes_2nd.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_off0000438d.bin
bf4e28fea401f343319e1e8f7010ef1a4be385a83e43faa7b3d89897060493f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x438D 5224 bytes
font_01_sfnt_off000054e9.bin
76738b93bae9465f1193101ce65b0b3d6472603a0d579bb1d3dddd5f1a4405a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54E9 12276 bytes

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