Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca34c9441cf2378…

MALICIOUS

PDF

68.5 KB Created: 2020-08-29 04:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0497172eb813c86fb3cfe544edd4fb9e SHA-1: 16e9f423f395fdf39862d6c99d5e6abd78a2b536 SHA-256: 4ca34c9441cf23786146b70a56c644629f7826fb493159cdc85a8f84ffde5330
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=wheel+of+fortune+landmark'. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links. The ML classifier strongly flags this PDF as malicious. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to redirect users to a potentially harmful site.

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.cc/wix?keyword=wheel+of+fortune+landmark
    • https://static.usrfiles.com/ugd/b8c837_71801df499414384981e9811586925b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_7943355ef603443b9928849a2c7c9bdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_e29708be502f42099aadc15b0e736f8b.pdf
    • https://static.usrfiles.com/ugd/b8c837_eeb7b8ec05764115b8b8a780d8230f3b.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/65789722460.pdf
    • https://static.usrfiles.com/ugd/b8c837_ccfb870c11294a28beb93c9af028b92f.pdf
    • https://static.usrfiles.com/ugd/b8c837_70a1ffe7f8bc4e2f9c2a1297548aa03e.pdf
    • https://static.usrfiles.com/ugd/b8c837_542a3a5babbd4b889e26299174a4c0fc.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf29c5708f764ffc9cd337e655c13732.pdf
    • https://static.usrfiles.com/ugd/b8c837_051ad0a2673f4287b6d7440a6db212f2.pdf
    • https://static.usrfiles.com/ugd/b8c837_94449c9086cb4f44896ca3bfaa8a7d87.pdf
    • https://static.usrfiles.com/ugd/b8c837_5e3f30dc7ec04e13856d12694b8d1fbd.pdf
    • https://static.usrfiles.com/ugd/b8c837_f67df672cd824cac8ab189471f21bafd.pdf
    • https://static.usrfiles.com/ugd/b8c837_21fe94e3d5a3497fb541548c99922b70.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_off0000d288.bin
dbc7469a1d95ba778b667e7616b273d17e20536cc00b48ec24591f1c759c7e19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD288 5048 bytes
font_01_sfnt_off0000e393.bin
c2c516a99ab16d3261b99b7e9f0aaca9725f9b9ee636ca8a051f4786ad2b89cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE393 9776 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.