Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbd62bccbc9582c2…

MALICIOUS

PDF

65.3 KB Created: 2020-08-20 01:58:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c275e4f0e0b8261f63efc2982627626b SHA-1: ab973700a423cdf23464c8f3de9c7b9526230cf7 SHA-256: dbd62bccbc9582c2a29062e4495a89057fc8485a7aa67e91ca81bf43bf86fc12
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=kanoodle+game+instructions+pdf'. This URL is designed to lure users into clicking, likely leading to further malicious content or downloads. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure the ultimate destination. The ML classifier strongly flagged this PDF as malicious.

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=kanoodle+game+instructions+pdf
    • http://files.readingleaves.net/uploads/1/3/1/8/131857270/gowanakawege.pdf
    • http://dabuni.urbanrips.com/uploads/1/3/1/1/131164250/9021087.pdf
    • http://files.mamdouh.co/uploads/1/3/1/3/131379054/ronir-lefisasepi-zotog-xexewida.pdf
    • http://files.limetreehomestaging.com/uploads/1/3/0/8/130874477/fexeludibi.pdf
    • http://files.myshoedestination.com/uploads/1/3/2/6/132680827/rapoparepona_gidega_bajedomupiwar_vafarego.pdf
    • https://cdn.shopify.com/s/files/1/0435/1878/7736/files/71761018582.pdf
    • https://cdn.shopify.com/s/files/1/0437/4419/8805/files/rudetetokonimugavolumu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/aflac_accident_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/duvofopoxekedidijexev.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2623/files/callan_method.pdf
    • https://cdn.shopify.com/s/files/1/0437/1903/3000/files/sodelaj.pdf
    • https://cdn.shopify.com/s/files/1/0439/0433/6027/files/free_template_bootstrap_4_admin.pdf
    • https://cdn.shopify.com/s/files/1/0432/3452/5352/files/gelopexeza.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/35599471928.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/siwof.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_off0000c219.bin
670a20f39f2f7aab3c6b3b824adcc569ffc04ea7d80c223afccc18dc8b85b593		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC219 5444 bytes
font_01_sfnt_off0000d492.bin
45d1d31c38eac7a385d8593802b5260f5a18b5470ff381f9017252e4f34a6337		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD492 10580 bytes

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