Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7f3a8969e942c3d…

MALICIOUS

PDF

45.1 KB Created: 2020-08-28 01:17:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 365089cbb334cf9a6bd1e26cffc733cb SHA-1: 4a1eb366fd47efcb495bc0982f6d527e4008ef42 SHA-256: c7f3a8969e942c3d1d55a935865f4e6d4b58d2626616a44e8c4827228537b862
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a high number of external links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links redirects to ttraff.ru, which is flagged as malicious. This suggests the PDF is designed to lead users to malicious infrastructure, potentially for phishing or malware delivery. The presence of a 'download' button lure further supports this. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=twilight+princess+hyrule+field+speed
    • http://gaguxamep.fleurspressed.com/uploads/1/3/2/6/132696067/4703236.pdf
    • https://cdn.shopify.com/s/files/1/0437/6510/4791/files/33250638135.pdf
    • https://cdn.shopify.com/s/files/1/0431/8904/3362/files/student_absenteeism_articles.pdf
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/va_form_21p-_530.pdf
    • https://cdn.shopify.com/s/files/1/0432/9832/4640/files/11130443867.pdf
    • https://cdn.shopify.com/s/files/1/0435/0600/8216/files/kesirumo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1297/files/14626291299.pdf
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/cellula_calciforme_mucipara.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4525/files/similar_sounding_words_with_different_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/dofik.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3085/files/fenivuralelegoxu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7645/1494/files/direitos_autorais_livro.pdf
    • https://cdn.shopify.com/s/files/1/0434/5148/2278/files/kavox.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_off00007082.bin
b772d459306e7a1b8304f31e13d8dcb7014c7cdc56e67bb0c9d8ff624c6d4dd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7082 5348 bytes
font_01_sfnt_off000082c6.bin
abb3512f3cf433b58856277a9cb1c81e65f5f53519f330a8d2b5644c32996066		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C6 10676 bytes

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