Malicious PDF — malware analysis report

Static analysis result for SHA-256 23ecf0b47dacb777…

MALICIOUS

PDF

56.5 KB Created: 2020-08-15 00:06:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0b2abd65c6606e727b6a1b8c97dbfe2 SHA-1: d3c3de3ffd2c91782203688b0ec6a4bb080c0125 SHA-256: 23ecf0b47dacb777246dcf9971a2a251c5e65defc859d2d63cd9c2484efefe13
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to `https://ttraff.ru/pify?keyword=hollywood+action+movie+tamil`. This indicates a link farm or redirection tactic to lure users to malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the PDF structure and embedded links are sufficient to infer a malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=hollywood+action+movie+tamil
    • http://files.ejacts.com/uploads/1/3/1/3/131384018/givebivusunilujogoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/4542/8122/files/enki_and_enlil.pdf
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/rirosafajumobukogejufas.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/tugewutewewutizok.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/lixevexavolakavi.pdf
    • https://cdn.shopify.com/s/files/1/0447/4834/1399/files/63708910551.pdf
    • https://cdn.shopify.com/s/files/1/0437/5196/4830/files/nalivujo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0294/5959/files/38634934174.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/wafizivedasumosed.pdf
    • https://cdn.shopify.com/s/files/1/0437/2650/4086/files/sowonegoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/xafelatelexudaxejidapovom.pdf
    • https://cdn.shopify.com/s/files/1/0434/5656/1319/files/genozipedenobikagolet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/44053222082.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000942c.bin
b01e4add63b583728c97dab727a1ac88b1023400afe279b8f0ac59238521a58d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x942C 4816 bytes
font_01_sfnt_off0000a489.bin
3388a2eb600f245c74be3b79ce619c155568b5f2eb0c1b49cc57559fbaa71992		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA489 10208 bytes
font_02_sfnt_off0000c771.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC771 4324 bytes

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