Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a464bb2e5e316b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-30 07:08:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b418e6b17a1d965256a339be142315f9 SHA-1: 169f7299a67eb7093360aa55f2cc899565b67d68 SHA-256: c6a464bb2e5e316bdc4454bb648dbca6929d793607a81441651bf690ab1250a6
128 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a research proposal and a call to action, suggesting a lure. The primary malicious link is https://ttraff.link/wix?keyword=sample+research+proposal+for+phd+in+human+resource+management, which likely leads to further malicious 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.link/wix?keyword=sample+research+proposal+for+phd+in+human+resource+management
    • https://cdn.shopify.com/s/files/1/0461/9426/2166/files/54017399608.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/xenatuzunevajumixof.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/35227611669.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/ipc-_a-_610_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/97830543801.pdf
    • https://cdn.shopify.com/s/files/1/0431/6915/3181/files/48808965947.pdf
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/33080625628.pdf
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/dezagodipez.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/linux_shell_scripting_basics.pdf
    • https://cdn.shopify.com/s/files/1/0443/7016/5916/files/c_for_dummies_free.pdf
    • https://cdn.shopify.com/s/files/1/0430/6878/4791/files/kazetifebuzujowesidafide.pdf
    • https://static.usrfiles.com/ugd/a2e20a_7c8cbc1372704253b9659ff18abf4e55.pdf
    • https://static.usrfiles.com/ugd/bb13a2_41f15140d8cd4c598aa4d0ee837de163.pdf
    • https://static.usrfiles.com/ugd/b8c837_c339c8983be644e3b4c99bf180b96e90.pdf
    • https://static.usrfiles.com/ugd/b8c837_c22b1b2e990942fdb564d53f60248541.pdf
    • https://static.usrfiles.com/ugd/fd7405_77e0dd208b54480fb0b6638ba3deb3dd.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005632.bin
dc610498683727b20e7a204471e758768cfb9cbeb4d4e2cee62e13ddd815b18b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5632 5556 bytes
font_01_sfnt_off000068e1.bin
8e798e1c830468561a98878341aa9bd9cbcc87398d08c8ec96cdbf1ddc191a0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x68E1 9708 bytes
font_02_sfnt_off00008a00.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A00 4324 bytes