Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ebae401db59c7ef…

MALICIOUS

PDF

44.3 KB Created: 2020-08-31 01:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baf56350610f273c88a2ce7f04711076 SHA-1: ba877585d4477e6efda246a5f75166ea58a33c0b SHA-256: 8ebae401db59c7ef0979f759fa45db4d0a37795ee1435c87dc14913043debbaa
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=viking+fdw100+service+manual'. This URL is presented within the document body, disguised as a service manual, to entice users to click. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded malicious URL is sufficient evidence of a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=viking+fdw100+service+manual
    • https://static.usrfiles.com/ugd/865d50_6d170dd7d4c740aab0eba4ee94f9a76d.pdf
    • https://static.usrfiles.com/ugd/24853a_a0358bc6e76d4fd3b0d64b084d316256.pdf
    • https://static.usrfiles.com/ugd/b8c837_22e15d914cc34657a0397e54a8e1e26e.pdf
    • https://static.usrfiles.com/ugd/49be48_228a5ddbedf84287a0966ae7b63b02e7.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6495/files/ccna_icnd1_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1417/files/majokimivagofelejuko.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kovutuku.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6667/files/matplotlib_remove_border.pdf
    • https://cdn.shopify.com/s/files/1/0427/8448/9631/files/27825095943.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_4219739ca4b241f9a783487d848e4860.pdf
    • https://static.usrfiles.com/ugd/451a43_e61a373aa30e4dddae01f771dac694df.pdf
    • https://static.usrfiles.com/ugd/47b1e8_5c11e76256bc49fb91a83809ab63310f.pdf
    • https://static.usrfiles.com/ugd/1813b3_002a6910fbf243b9bd7dd1bd5427d6c7.pdf
    • https://static.usrfiles.com/ugd/d902bb_dcf27f556e744435b53c7621fa0474d7.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/nexasazininazum.pdf
    • https://cdn.shopify.com/s/files/1/0438/9509/5451/files/webex_room_kit_admin_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/3051/7672/files/securecrt_for_mac_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/vaxewadogemugalo.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/
    • https://cdn.shopify.com/s/files/1/0431/6

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069cf.bin
d78cf03aa422ded6226abb0d16fed3297be447f7951ec283e50abc7ff7ca664b
pdf-font-stream PDF embedded font (sfnt) at offset 0x69CF 5716 bytes
font_01_sfnt_off00007d49.bin
2a472105977b7a429c4fae4ba9c15bcb9f53a830ea4da57bc39f8c363ab551a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D49 12128 bytes