Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc2e153aa4824685…

MALICIOUS

PDF

52.4 KB Created: 2020-09-01 11:28:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2d66cd34f093b175a80aecc2a6a85d5 SHA-1: a2ca257b6a39fdc72ba3be192d810aa2ac53ef02 SHA-256: bc2e153aa48246852aeeac3cfabe74b0afe1a2006f21a1ffb6e2c5e0c4d1656a
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a malicious redirector link and a link farm, indicating an attempt to lure users to malicious infrastructure. The presence of a 'download button' heuristic further supports this. The embedded URL 'https://ttraff.com/wix?keyword=crane+brinton+anatomy+of+a+revolution+worksheet' is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it's the primary lure.

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.com/wix?keyword=crane+brinton+anatomy+of+a+revolution+worksheet
    • https://static.usrfiles.com/ugd/4c1554_b3ff9e64333f4ed5b7c826ae9e9143e1.pdf
    • https://static.usrfiles.com/ugd/c1de29_6e27f578300a41ada68debf9a6a5139e.pdf
    • https://static.usrfiles.com/ugd/911c12_6cae3a72feb04f18a2bdfeccc3cd869d.pdf
    • https://static.usrfiles.com/ugd/88a84f_db3a15050dc641f58252174f84a53035.pdf
    • https://static.usrfiles.com/ugd/b8c837_80314a30d10c4facaac57f5f2912e18e.pdf
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/reflection_across_the_x_axis.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9603/files/28261652638.pdf
    • https://cdn.shopify.com/s/files/1/0435/8507/7405/files/75967162772.pdf
    • https://cdn.shopify.com/s/files/1/0469/9625/8968/files/essentials_of_marketing_13th_edition.pdf
    • https://static.usrfiles.com/ugd/b52961_0248b1f21f2e44a1b51f3b529c0fedff.pdf
    • https://static.usrfiles.com/ugd/6846fe_1e446a710ffa47499a89bbbe435958ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc7047efdb6749d1a1d3edc6e23ecf0e.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_987ccd849cc2456d8e8c1aadc285036a.pdf
    • https://static.usrfiles.com/ugd/bf0735_524543cc6b3b4786954e5400edeafc6a.pdf
    • https://static.usrfiles.com/ugd/b48b60_392cd9956d2c4b57999752d9ea5843e5.pdf
    • https://static.usrfiles.com/ugd/cb4a18_4c761be07dc64347a5edbe6c7c269a35.pdf
    • https://static.usrfiles.com/ugd/b8c837_032545bc579f4844a2adcab88841ae67.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_off00008edc.bin
4fa577e5990a1339626b238d077b4173f9074dd2fc85c8be22387fb3ce37f3c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDC 5368 bytes
font_01_sfnt_off0000a10f.bin
61b85ffd0d7c209df23aa4ac093ff1a8c9f73330caeec48e1d180c36a0bb4465
pdf-font-stream PDF embedded font (sfnt) at offset 0xA10F 10512 bytes