Malicious PDF — malware analysis report

Static analysis result for SHA-256 d92f118de335d182…

MALICIOUS

PDF

35.0 KB Created: 2020-08-30 09:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 711bc46622507eb129004cd6b4e51d1c SHA-1: b7d2dd1e021a342089a233f503cd7f10cc2186ca SHA-256: d92f118de335d182212d095971e785c893ae55cff6379e911c3d76b0693fa0ef
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.club/wix?keyword=a+haunted+house+download'. Additionally, it exhibits a PDF link farm heuristic, with numerous links to Shopify-hosted PDFs, one of which is 'https://cdn.shopify.com/s/files/1/0440/6552/1814/files/atlas_de_parasitologia_humana_ash.pdf'. The presence of a visual download button lure further supports the malicious intent of directing users to 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.club/wix?keyword=a+haunted+house+download
    • https://cdn.shopify.com/s/files/1/0440/6552/1814/files/atlas_de_parasitologia_humana_ash.pdf
    • https://cdn.shopify.com/s/files/1/0435/3739/9960/files/zegiduwelago.pdf
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/aditya_hrudayam_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0436/3455/7088/files/unit_vector_transformation_from_cartesian_to_cylindrical.pdf
    • https://cdn.shopify.com/s/files/1/0447/5705/7685/files/mas_credit_risk_management_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0432/4484/7266/files/xcode_could_not_locate_device_support_files.pdf
    • https://cdn.shopify.com/s/files/1/0434/1766/5703/files/rawaginubepikusuvijuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5736/4638/files/cahier_vacances_cp.pdf
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/76007594507.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a24cee329544235af70991f2c28d87c.pdf
    • https://static.usrfiles.com/ugd/b8c837_be7fa280f0f7406d832ece9bff050d7e.pdf
    • https://static.usrfiles.com/ugd/b8c837_8341131268b34d49abf5fd162fc899af.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fde680701e94438affd19eb660002ba.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_off00004c33.bin
b6433ab12984b9b1da895374257922bfa751d4503a163a0c64d1dda18336e8b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C33 4900 bytes
font_01_sfnt_off00005ce3.bin
160e4ccc46739b933d5c8db6b768c0df3bd2e2387df47d12931b3c3d73ed4916
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE3 10148 bytes