Malicious PDF — malware analysis report

Static analysis result for SHA-256 274b687a75527da1…

MALICIOUS

PDF

50.3 KB Created: 2020-08-19 23:07:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04f36c813cd5eb472afe5c2423149899 SHA-1: 906144bcfae151d34b02ab71893901be0f1716f4 SHA-256: 274b687a75527da1cdac171510913b32e9402bc4fee7de1782b0811a306c6555
150 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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to lure the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=busy+busy+neha+pandey+song++pagalworld.+com
    • http://xiwajoze.gardenwithlisa.com/uploads/1/3/1/4/131407067/8112241.pdf
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/evernote_annotation_summary.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/boviguriwilazux.pdf
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/alberta_rental_agreement_forms.pdf
    • https://cdn.shopify.com/s/files/1/0437/8984/4637/files/amada_bending_machine.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/dowimikigiwixavekopip.pdf
    • https://cdn.shopify.com/s/files/1/0428/3367/4396/files/98817602231.pdf
    • https://cdn.shopify.com/s/files/1/0433/8905/9228/files/beretta_9000s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/vejogarikugovibumilapulog.pdf
    • https://cdn.shopify.com/s/files/1/0431/5034/4352/files/pig_latin_to_english.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/
    • https://cdn.shopify.com/s/fi

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079f6.bin
3b915d724958bdfeaa4557d4784f8865ddfd12125e864999b39ff861c29a5bb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79F6 5904 bytes
font_01_sfnt_off00008ded.bin
47585a4dc53738885ad6f7d49e73e598a0531efb50a55919d14e209009410b45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DED 14876 bytes

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