Malicious PDF — malware analysis report

Static analysis result for SHA-256 950a50c4dfa553bf…

MALICIOUS

PDF

60.8 KB Created: 2020-07-25 20:30:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fe1b8f1e7b375e89ba699fbc1a30178 SHA-1: b93f9ca5bdcd68063017bca034689390494de484 SHA-256: 950a50c4dfa553bfc510d9d93c2d6a9cb32fc1cf75f232447a44402666e9a0d5
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of outbound links, likely for SEO manipulation or to host further malicious content. The document body, though heavily obfuscated, contains text related to 'child protection nsw reporting', which is likely a lure to encourage users to click the embedded malicious link.

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=child+protection+nsw+reporting
    • http://files.theitalianbridge.com/uploads/1/3/0/9/130969825/77f2113.pdf
    • http://files.albionhca.org/uploads/1/3/2/8/132815063/dadomajewikur-jaridudilifefow.pdf
    • http://files.theblinddogranch.com/uploads/1/3/0/7/130740429/8591422.pdf
    • https://cdn.shopify.com/s/files/1/0430/7514/1794/files/pelogejelijosijeloto.pdf
    • https://cdn.shopify.com/s/files/1/0427/5296/6812/files/65790967126.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/supexewozapad.pdf
    • https://cdn.shopify.com/s/files/1/0431/3802/3592/files/gimiz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdf
    • https://cdn.shopify.com/s/files/1/0438/1350/3133/files/salinudezavegujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/19609406275.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/45413501883.pdf
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/2947324879.pdf
    • https://cdn.shopify.com/s/files/1/0431/5673/4109/files/38015903866.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/95975902284.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_off0000b213.bin
c523beb84dced72a657b99a9e8d85a6329f3ce5b126035107bc13e51b4210db0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB213 5028 bytes
font_01_sfnt_off0000c337.bin
08b7f7ad27ce1c265a1e255c57624743e33f954cc7d4f0a52f9ecb64deb0b95a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC337 10096 bytes

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