Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9a343dbe80fa2e3…

MALICIOUS

PDF

45.3 KB Created: 2020-08-24 18:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8296f5a6fc4bfe5012af2d70dd5b984a SHA-1: fb4485670f9c4c74c44e1d9115a138850c6e744d SHA-256: d9a343dbe80fa2e37bb5d53a9cce9783e61126ec690fc28a3c7b761d447d8036
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.cc/pify?keyword=convert+tapes+to+digital+format'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though partially corrupted, contains the same redirector URL and a benign-looking Shopify URL, suggesting a lure to a malicious site under the guise of a helpful document. 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://ttraff.cc/pify?keyword=convert+tapes+to+digital+format
    • http://files.globalcenterforsuccess.com/uploads/1/3/1/6/131637224/b17958144887a0e.pdf
    • http://files.wildaboutwampum.com/uploads/1/3/2/6/132695568/naposu.pdf
    • http://files.cafe643.com.au/uploads/1/3/0/7/130775023/8c110b9112b276b.pdf
    • http://files.afaparents.org/uploads/1/3/0/7/130739826/kareletobaguko.pdf
    • https://cdn.shopify.com/s/files/1/0428/4104/7206/files/17460817331.pdf
    • https://cdn.shopify.com/s/files/1/0437/3721/9226/files/kinetic_and_potential_energy_worksheet_bonus_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/nijizugazupapik.pdf
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/xoboxitux.pdf
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/92492529134.pdf
    • https://cdn.shopify.com/s/files/1/0436/1804/2018/files/36508481649.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/rafawewavarenuxalofodi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/23173657078.pdf
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/67383622934.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_off0000731f.bin
547c68e148ca3d39f9ae84fcb20d7e710c3f17ff2f77a1988bf95d53145a716d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x731F 5324 bytes
font_01_sfnt_off00008525.bin
786acaf95dcd5651d76fbf36dab0db599a91e0f63d80dedf44b2659c3e508824		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8525 10276 bytes

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