Malicious PDF — malware analysis report

Static analysis result for SHA-256 967829b3ef8437c1…

MALICIOUS

PDF

41.6 KB Created: 2020-08-06 15:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d0d692884f064e526255464c919c045 SHA-1: d5d3c9062267e47249522f1a75567a5fad1c85ed SHA-256: 967829b3ef8437c16a77e3135c34dd1adfce7d24ca63fc9cee2e34bd55bcfe8e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting a deliberate attempt to lead users to malicious content. The presence of numerous links to external PDFs, including those hosted on Shopify, indicates a link farm strategy to potentially improve search engine ranking for malicious content or to distribute malware.

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=alcalosis+metabolica+hipocloremica+pdf
    • http://wupimupo.interacthhs.com/uploads/1/3/2/6/132681556/bajazorixobipivol.pdf
    • http://files.thesolidrockshop.com/uploads/1/3/0/8/130813797/zaxisufibuxuxigusi.pdf
    • http://files.chezbudgourmetseasonings.com/uploads/1/3/2/3/132303269/3305881.pdf
    • http://jexudav.colorfulthreadsembroidery.com/uploads/1/3/1/6/131606490/zawofel_guxezogaguw_vapugusanaka_lamekutanarej.pdf
    • http://files.propelexcel.co.uk/uploads/1/3/0/8/130813558/8841008.pdf
    • https://cdn.shopify.com/s/files/1/0432/5015/5688/files/65129780266.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/free_church_program_template_microsoft_word.pdf
    • https://cdn.shopify.com/s/files/1/0432/7414/1864/files/csr_racing_2_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/fl_studio_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/7554/2950/files/8371083331.pdf
    • https://cdn.shopify.com/s/files/1/0429/7549/4300/files/retire_early_with_real_estate_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/8760/1559/files/womagidipak.pdf
    • https://cdn.shopify.com/s/files/1/0431/0184/7713/files/seluxixojozawu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/13160390395.pdf
    • https://cdn.shopify.com/s/files/1/0435/7039/7339/files/jujadijezujivu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/raresej.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_off00006515.bin
1653e0d682df77cbb40d9e985a73578b50c66ea4885d7bfa0dbe5dee5b855ed0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6515 5524 bytes
font_01_sfnt_off000077a8.bin
ee08227f382f238cd42e9b84e2b29e920751d0b2876e22cebca75252ebf9d5b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A8 9796 bytes