Malicious PDF — malware analysis report

Static analysis result for SHA-256 824ea3dc24b615f9…

MALICIOUS

PDF

46.4 KB Created: 2020-08-29 04:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca792a1ba300023f167b1074b57bb5ae SHA-1: 62bfee195cad9b2ab5b3a5d8f0ff9446de5489c2 SHA-256: 824ea3dc24b615f9667146bf17a4f2997e76480aecc304a4eb2c8f09167c629b
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=rocksmith+2014+ps3+pkg'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous external links, including one to 'https://cdn.shopify.com/s/files/1/0432/7197/9172/files/37002371725.pdf'. The presence of a visual download button lure further supports the malicious intent of directing users to external, potentially harmful, content.

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/wix?keyword=rocksmith+2014+ps3+pkg
    • https://cdn.shopify.com/s/files/1/0432/7197/9172/files/37002371725.pdf
    • https://cdn.shopify.com/s/files/1/0433/6890/6906/files/caries_detection_dyes.pdf
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/45815298980.pdf
    • https://cdn.shopify.com/s/files/1/0462/6943/1959/files/joining_letters_handwriting_worksheets_uk.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/assistant_commandant_syllabus_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0463/4499/4973/files/cultural_anthropology_asking_questions_about_humanity.pdf
    • https://static.usrfiles.com/ugd/b8c837_09df41dc88e24c8cb260ba7435897a25.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d8f27f1c3a94be4b9f7f1a6f11f55db.pdf
    • https://static.usrfiles.com/ugd/b8c837_e334b50ff0814d4296a42551ef71dad4.pdf
    • https://static.usrfiles.com/ugd/b8c837_da9089b82e744d2498ab6fadc3cd9248.pdf
    • https://static.usrfiles.com/ugd/b8c837_735c6288f6dc435e9ebd8326560b260d.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c110e82de454fb2bef28a9e1e904a6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4e0950ca95c47c4bbd80cc14a98f104.pdf
    • https://static.usrfiles.com/ugd/b8c837_a203a657349b45b2bf7e507b00c0a2a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_47f24f7d3fb443b286c869478c059c20.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_off00006e17.bin
31f67f548b9341f24df9741f76682acdf67ddd339fb161815e5e2520ab72adcf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E17 5660 bytes
font_01_sfnt_off00008155.bin
1630e2a0584f811f6ba637e513843676d969554c230bc61cff3068046d2ab648
pdf-font-stream PDF embedded font (sfnt) at offset 0x8155 13584 bytes