Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7495198c8ef48c3…

MALICIOUS

PDF

43.3 KB Created: 2020-08-31 01:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e408d9241438a8b6d04d022aecc50d5 SHA-1: 212831a4c891cae263004b1506a0958768a093df SHA-256: c7495198c8ef48c3e8dd12699de5086185dbefe95af83da04427e02db5ff4688
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.ru/wix?keyword=space+marine+librarian+painting+guid', is flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or to download further malware. No scripts were extracted, and the document body is heavily obfuscated.

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/wix?keyword=space+marine+librarian+painting+guid
    • https://cdn.shopify.com/s/files/1/0434/7795/8822/files/50825382440.pdf
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/buzusire.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/giratajolexodomofavewolov.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/vinayaka_vratha_kalpam_telugu.pdf
    • https://static.usrfiles.com/ugd/8acad3_95a690beb6844341954035d5ba50d138.pdf
    • https://static.usrfiles.com/ugd/6846fe_07af9f5672c1444dab2de9a0381b0f63.pdf
    • https://static.usrfiles.com/ugd/eed56f_4c6570ceeaed4717a6a76fb54702145d.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_82992418117e43f49e1e227c461aeaac.pdf
    • https://cdn.shopify.com/s/files/1/0434/8539/7152/files/texto_argumentativo_estrutura.pdf
    • https://cdn.shopify.com/s/files/1/0429/1212/0998/files/regeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/2841/3607/files/patient._co._uk_gout_diet_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/kuzefeziraj.pdf
    • https://cdn.shopify.com/s/files/1/0434/5721/6669/files/ginusi.pdf
    • https://cdn.shopify.com/s/files/1/0439/2802/7304/files/alphabet_francais_majuscule_et_minuscule__imprimer.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_off00006a51.bin
c0866c907fb66bcd14233de2f69397e7d77d53844d35cecf9a217af5a489872a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A51 5456 bytes
font_01_sfnt_off00007cb2.bin
e8ed4352074ce173c5f4725eaadba1b11133d3a233481c7da75feb5b29c5188c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB2 10880 bytes

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