Malicious PDF — malware analysis report

Static analysis result for SHA-256 9170cdb120b596ad…

MALICIOUS

PDF

53.3 KB Created: 2020-08-31 00:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17d68238faf0628ee9f1b074feb99a06 SHA-1: b1757742526b080d06fc9a7159ea6490bd80a5dc SHA-256: 9170cdb120b596adf1e137882b69769eedb06a02a17fb5a30929c77028fc60f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating a phishing or malware distribution attempt. Additionally, a 'Clipboard command execution lure' heuristic suggests the document instructs the user to copy and paste content into a shell, which is a common technique for executing malicious payloads. The embedded URL https://ttraff.cc/wix?keyword=spring+webflux+tutorial+pdf is flagged as malicious.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.cc/wix?keyword=spring+webflux+tutorial+pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/51282701613.pdf
    • https://cdn.shopify.com/s/files/1/0463/2533/4171/files/vodowusizopapurujopenafe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/91727801816.pdf
    • https://cdn.shopify.com/s/files/1/0432/8875/6384/files/55621420199.pdf
    • https://cdn.shopify.com/s/files/1/0432/6077/2516/files/81907282271.pdf
    • https://cdn.shopify.com/s/files/1/0449/0782/3259/files/capacitor_types.pdf
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/three_golden_rules_of_accounting.pdf
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/dusosul.pdf
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/coc_mod_apk_offline_server.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6495/files/munuketuwinif.pdf
    • https://cdn.shopify.com/s/files/1/0429/7683/7785/files/2020_hindu_tithi_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0440/1355/1781/files/autodesk_revit_structure_2020_fundamentals.pdf
    • https://cdn.shopify.com/s/files/1/0431/2167/2356/files/accounting_specialist_job_description_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/0877/6600/files/hw_angle_relationships_with_circles_answers.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_off00008f79.bin
6b3ef5e7012a8c2f59018342f9495476210503ad06e00f9ba6269bc7d0c26527
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F79 5436 bytes
font_01_sfnt_off0000a211.bin
595b10e3a99fd49cb4ea7e00b24ead61829d81a11c020f622cd663772e61568e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA211 11184 bytes