Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e61e53f1966f9f7…

MALICIOUS

PDF

43.5 KB Created: 2020-08-26 10:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90bcc6ff46423f4ef42c970b378fe877 SHA-1: 4141f8a6589559b6d514cf0104920ef1bd1a497e SHA-256: 4e61e53f1966f9f77be5e49cff0557601f6c7a0db77f0384e00382767c553307
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=sociedad+y+econom%25C3%25ADa+en+el+paleol%25C3%25ADtico+y+neol%25C3%25ADtico.+la+pintura+rupestre. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites. 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.com/pify?keyword=sociedad+y+econom%25C3%25ADa+en+el+paleol%25C3%25ADtico+y+neol%25C3%25ADtico.+la+pintura+rupestre
    • http://files.extraontop.com/uploads/1/3/2/6/132681229/9e9297b1.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/xanajalelizivenulojoleka.pdf
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/37418684571.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/nuvikomifox.pdf
    • https://cdn.shopify.com/s/files/1/0430/7995/8679/files/32991118312.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/discord_name_colors.pdf
    • https://cdn.shopify.com/s/files/1/0435/8550/3393/files/kukaxavemulibasil.pdf
    • https://cdn.shopify.com/s/files/1/0433/2548/9305/files/covalent_compounds_worksheet_chemistry_332_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7801/6421/files/allis_chalmers_wd45_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4568/files/zivuvupof.pdf
    • https://cdn.shopify.com/s/files/1/0447/4827/5863/files/lagu_balungan_kere_koplo_uyeshare.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_off000067f9.bin
569ea0c28f32dd3fa7da4a72560fad401dc59c4208d19fa562a44964cbde3762		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F9 5508 bytes
font_01_sfnt_off00007a9d.bin
f55a1b15f0cb2598dfffd9f61e35777c5b2577c67e7194b15aa3250e745ee68d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9D 10804 bytes

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