Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a824d08a7043b2b…

MALICIOUS

PDF

43.2 KB Created: 2020-09-02 22:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e76b22c2bd2998872268ed6711646eba SHA-1: 7c4e2737845f326ee9a5a61bdc57df383a7ad237 SHA-256: 4a824d08a7043b2b03487cbe0852dfea58518b865367d9fcfafdfa66c0eb710c
130 Risk Score

Malware Insights

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

The PDF file contains a prominent link that redirects to a malicious URL, disguised as an 'incident report form template'. This URL is part of a link farm, suggesting an attempt to distribute malicious content or phishing pages. The presence of a visual download button further supports a lure-based attack. No scripts were extracted, but the PDF structure and embedded links clearly indicate a social engineering attempt to redirect the user to a potentially harmful site.

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=incident+report+form+template+in+word
    • https://static.usrfiles.com/ugd/b8c837_5d8179d1e34848bc88fe64cc0c54dca9.pdf
    • https://static.usrfiles.com/ugd/bca722_43e5af3ef6074fb89bb01478c1cba5ce.pdf
    • https://static.usrfiles.com/ugd/9b7d8a_52a719d2ce3c4afa8fb3e7ab5fa6084b.pdf
    • https://static.usrfiles.com/ugd/b8c837_7547b62a960b4f7ba97de62b12829a1d.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbcd355dca4b453e893ae47c2ec72677.pdf
    • https://static.usrfiles.com/ugd/5c139a_4e98a1de91c047cd8fb5a72b34811cf1.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_0bd3f2dfa849471ca970251a5282254b.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8cec578f8b942bfbaceeef63fab3667.pdf
    • https://static.usrfiles.com/ugd/40336e_6c736dcd8012447eb8197526d732a885.pdf
    • https://static.usrfiles.com/ugd/b8c837_9cb0c7f7e05c460f8636592472dbac9e.pdf
    • https://static.usrfiles.com/ugd/8e6e76_be72b03d5e1b4d079edff818fedb0078.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/wovulowozofomedizem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92313200312.pdf
    • https://cdn.shopify.com/s/files/1/0434/2480/9116/files/descriptive_study_definition.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/87346777656.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/nigafawomomufenozinudeler.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_off00006c20.bin
27c720fe10d176a4185591b198c27c916f679d7a15b9e71057f4ec1f635e062f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C20 5152 bytes
font_01_sfnt_off00007da2.bin
80a2a2e0717787af22113ce53b0be15ce7bde9b42db05f2ab1268a61f97d1d86
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA2 10068 bytes