Malicious PDF — malware analysis report

Static analysis result for SHA-256 df3d708e2d97438d…

MALICIOUS

PDF

32.9 KB Created: 2020-09-01 01:16:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e498be786b17951e372bad65ebde371 SHA-1: 5f1bb0020adf2fc575f9ee441f9327638035ad7b SHA-256: df3d708e2d97438d678b67325531840a0ead3c5b460f8ddfdd2feea02e12d62d
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=lagu+mundur+alon+alon+dj+metrolagu'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The PDF also contains a link farm heuristic, suggesting an attempt to manipulate search engine results or distribute links widely. No scripts were extracted, but the embedded link is the primary indicator of malicious intent.

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.ru/wix?keyword=lagu+mundur+alon+alon+dj+metrolagu
    • https://static.usrfiles.com/ugd/b8c837_b58bd7371b9e4bb192edae163889cf27.pdf
    • https://static.usrfiles.com/ugd/b8c837_d92aa52cccf84597ad2fa646c5c5e406.pdf
    • https://static.usrfiles.com/ugd/808d8c_243f866d0bcb404fa14f165404dd6087.pdf
    • https://static.usrfiles.com/ugd/1fa6dd_9ff89d4e1baa47da8a18a48c33deaf44.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/essential_mathematical_biology.pdf
    • https://cdn.shopify.com/s/files/1/0430/3018/4087/files/bizasepugeri.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3766/files/55463373474.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/vilazetirelexuput.pdf
    • https://cdn.shopify.com/s/files/1/0432/5018/8443/files/20389923020.pdf
    • https://cdn.shopify.com/s/files/1/0464/2347/4328/files/facebook_multiple_photos.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/nodudokawewedegefexege.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/wovaloponatu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1638/7733/files/micro_business_definition.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_off000044ca.bin
3d733b79f423af03ae25ecaa95a1da0aa2bf51d62dcb1b4443f331f1401ba430		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44CA 4984 bytes
font_01_sfnt_off000055aa.bin
bffde64bd18ecd24f23eff84962daffafcc9d46fe185b5514cca0c7ab61c51d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55AA 9872 bytes

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