Malicious PDF — malware analysis report

Static analysis result for SHA-256 acba1e345e9a4e5a…

MALICIOUS

PDF

38.6 KB Created: 2020-08-23 06:56:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b95efcf4aa0dc326695a071a2c87e33 SHA-1: 64322f84d32b5b63b45b8ab18f389eb68e98df89 SHA-256: acba1e345e9a4e5ae200ce408f048f83a70015cc03697956384bdd22bc712fde
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.com/pify?keyword=can%2527+t++music+from+vk'. Additionally, it exhibits a PDF link farm pattern, with numerous links, many hosted on Shopify, intended to manipulate search engine results. The document body contains obfuscated text and the malicious URL, suggesting an attempt to lure users to a compromised 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.com/pify?keyword=can%2527+t++music+from+vk
    • http://files.tomkeatinge.net/uploads/1/3/1/6/131607943/jinuduxu-pebemuserasa.pdf
    • http://files.argonauta-boracay.com/uploads/1/3/2/6/132683334/timejide_safawaro_xedirebaboso.pdf
    • https://cdn.shopify.com/s/files/1/0428/8181/0595/files/xuxowemi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8344/7966/files/seat_ateca_specification.pdf
    • https://cdn.shopify.com/s/files/1/0438/5308/6885/files/86042057645.pdf
    • https://cdn.shopify.com/s/files/1/0432/5769/2315/files/sicp_abelson.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6330/files/wudenijud.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/fujejuzaxonugefigu.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/essential_english_grammar_in_use_supplementary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0435/5411/1656/files/70024905046.pdf
    • https://cdn.shopify.com/s/files/1/0431/3566/4284/files/dojinofu.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_off00005ae3.bin
ca74fe938a2e8bab37a3c2a2750a3505a426b98a69862f2c919ed497d2102b78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE3 5060 bytes
font_01_sfnt_off00006c0f.bin
abb150ba21780f1a26b263df00cd4e06dc60d68e6059c3f7511ff09be5209919		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0F 10044 bytes

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