Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b63a0fdd132f635…

MALICIOUS

PDF

53.9 KB Created: 2020-08-01 17:17:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a1db1da201c17eae22b87a8641c6347 SHA-1: a3a28ca9e452ca4d8f9ca818ea65bcb7366d7ea2 SHA-256: 8b63a0fdd132f6355dfb6873a87fbdefb50674712d95a3b68ec362f4b12ebdc5
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=walmart+w+2'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a phishing or scam attempt to redirect users to a potentially harmful site.

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=walmart+w+2
    • http://files.votejeffblubaugh.com/uploads/1/3/1/3/131384335/luresaluzawimuw-mutizatus.pdf
    • http://files.aidenlee.net/uploads/1/3/0/8/130813639/nitofaziminufu.pdf
    • http://files.erinboake.com/uploads/1/3/1/4/131408170/venolunazoxim_jukawudev_newuwofit_xibepodojewib.pdf
    • https://cdn.shopify.com/s/files/1/0434/9706/2564/files/57711546128.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdf
    • https://cdn.shopify.com/s/files/1/0428/1021/2518/files/71565604917.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/riwabotoravabemobajagered.pdf
    • https://cdn.shopify.com/s/files/1/0431/1675/7153/files/54265467229.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ridojunewosinojep.pdf
    • https://cdn.shopify.com/s/files/1/0432/7895/8758/files/fovela.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/potowefevutezuxolutasowe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0011/files/daziruri.pdf
    • https://cdn.shopify.com/s/files/1/0431/0358/4423/files/34076402299.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/66320715980.pdf
    • https://cdn.shopify.com/s/files/1/0436/0234/6148/files/mokiw.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_off000094a6.bin
2d61d065b3d85a2386b753bdc73012f852351819122c065ce47e45881c43bf9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94A6 4892 bytes
font_01_sfnt_off0000a54a.bin
43d40613e1b5327984a842d39dcbd913f43d60ba78a91acbcce6ed6a93b95d18		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA54A 11128 bytes

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