Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00d1757d8e8bb71…

MALICIOUS

PDF

62.2 KB Created: 2020-09-30 03:08:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85408418bce4cf682f72a26339e8261f SHA-1: 5b94b64fa2dadd7221183753de9aecea4b37d60d SHA-256: d00d1757d8e8bb71c56054a4dd0731a98344bb072b55621a26352b5ea6cf2f6e
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a link farm, with multiple embedded URLs pointing to external resources. One critical heuristic firing indicates a PDF malicious redirector link to 'https://gettraff.ru/strik?keyword=estrada+nacional+2+roteiro+pdf', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains this URL and other Shopify links, reinforcing the link farm characteristic. 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://gettraff.ru/strik?keyword=estrada+nacional+2+roteiro+pdf
    • https://site-1036855.mozfiles.com/files/1036855/gexisin.pdf
    • https://site-1036655.mozfiles.com/files/1036655/nekefekir.pdf
    • http://files.reachfc.org/uploads/1/3/1/4/131409037/tiruv.pdf
    • http://files.ipsproptech.com/uploads/1/3/2/7/132740564/8fb04c.pdf
    • http://livut.massrealestatewholesalers.com/uploads/1/3/1/3/131398083/jozizisivaranom-wazanewiseliv-zuwevubofup-boxotubalerufat.pdf
    • http://files.nvhsbusiness.com/uploads/1/3/2/8/132814996/1e547d6a90a70ef.pdf
    • http://files.kiddirama.com/uploads/1/3/2/6/132682204/mijilozotiko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9812/9059/files/83713301448.pdf
    • https://cdn.shopify.com/s/files/1/0430/2834/9085/files/13287377298.pdf
    • https://cdn.shopify.com/s/files/1/0435/2091/7668/files/brachial_plexus_injury.pdf
    • https://cdn.shopify.com/s/files/1/0436/5749/4686/files/hunters_glen_baptist_church.pdf
    • https://cdn.shopify.com/s/files/1/0428/8049/9879/files/tuxakewuxozofupup.pdf
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/gazelifov.pdf
    • https://cdn.shopify.com/s/files/1/0434/6213/1878/files/95129149771.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pewugokujugiwiburonanas.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_off0000a6b0.bin
546c51443d930cddebe8e02564cdcd4eb66088b9c8c2feace54379fe90aee426		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6B0 5236 bytes
font_01_sfnt_off0000b893.bin
d256f3de8fbab624ef3905f151a61a3b2ba0305f5036a57997c7b91b231e2ffd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB893 18608 bytes

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