Malicious PDF — malware analysis report

Static analysis result for SHA-256 346c8414a136dd5a…

MALICIOUS

PDF

37.1 KB Created: 2020-09-06 13:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a74676ba35c37348b4d9c2b0df8cbce5 SHA-1: 305774ac6b49ac33d976d204c1ef2013447101d4 SHA-256: 346c8414a136dd5a2c18523ff6df0eba4a3d1b71c7a67cf03369c2cea537c5da
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'report water outage' notification, aiming to trick users into clicking it. The link leads to a known malicious redirector, which is a common tactic for phishing and malware delivery. The document also contains a large number of external links, many of which point to benign content, suggesting a link farm or SEO poisoning attempt to obscure the malicious link.

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.link/wix?keyword=report+water+outage+dekalb+county
    • https://static.usrfiles.com/ugd/b8c837_51cdce691b974b5bbe43889054a00054.pdf
    • https://static.usrfiles.com/ugd/1fbf8b_1fa381dfdc02485f8e60e1530c51ef85.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a38c410f2a1421f89fc2e4e7703d5b9.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/ansible_template_directory.pdf
    • https://cdn.shopify.com/s/files/1/0431/4490/4865/files/adjective_forming_suffixes_list.pdf
    • https://cdn.shopify.com/s/files/1/0438/0203/4336/files/19687486709.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/21412586183.pdf
    • https://static.usrfiles.com/ugd/b8c837_0fd34406ab50430ea2086a9692783284.pdf
    • https://static.usrfiles.com/ugd/b8c837_90f3194e6bc64949924889cee6bf18be.pdf
    • https://static.usrfiles.com/ugd/66c878_dbb51617a4e64ce38aec69cc8bc962ee.pdf
    • https://static.usrfiles.com/ugd/837d34_e969142e993b44a5bc470640999bcebe.pdf
    • https://static.usrfiles.com/ugd/b8c837_67710c0cfd694f7d96f786230b9ed7a9.pdf
    • https://static.usrfiles.com/ugd/824332_884b8c304fd846fcab8902cb79d407d5.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_off000052c0.bin
ba544a04bf3c7b95c99e34049a2da16978b9fe1e85824122edb4b859d44b139e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52C0 5468 bytes
font_01_sfnt_off00006584.bin
6738801febe76acfd33e17242dd1d97607be05f20eaf9db5e956445fb54f50d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6584 9984 bytes

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