Malicious PDF — malware analysis report

Static analysis result for SHA-256 f531fd4025d96e48…

MALICIOUS

PDF

47.3 KB Created: 2020-08-30 07:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00a060eb91254abef28b045d5f88b33b SHA-1: fe16101aac8f51f9182ca25106ed76f771739542 SHA-256: f531fd4025d96e4840d3b33037f476f05034424252aba06a4cd6d38083077ef0
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'vinylmaster xpt v4 0 crack', suggesting a lure for pirated software. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the redirection to malicious infrastructure, and 'PDF_SEO_LINK_FARM' indicates a large number of outbound links, likely for SEO manipulation or to host further malicious content.

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=vinylmaster+xpt+v4+0+crack
    • https://static.usrfiles.com/ugd/76de1a_d982daccacad4f11a88fe525496dd9c9.pdf
    • https://static.usrfiles.com/ugd/2813e2_f9493f62f8b944789958854b17d487af.pdf
    • https://static.usrfiles.com/ugd/b8c837_dff7c2f01dfb49fc867614780af3b1a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_0594522118634434b89fcab4cf604644.pdf
    • https://static.usrfiles.com/ugd/5b9a87_6a7c29e61b7d48c886b1f2cd89dbcf05.pdf
    • https://cdn.shopify.com/s/files/1/0437/6422/0058/files/guidelines_for_abnormal_pap_test_results.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f3dcc434ccf4713bb7ef50dd056a26e.pdf
    • https://static.usrfiles.com/ugd/d01287_7288480fe2594e399075447a0b7621b8.pdf
    • https://static.usrfiles.com/ugd/b8c837_9fbb5d3da2d44a22b32840ff8658b723.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f587eeae5dd4c36b66325d0e668e7d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_cb3ea54105ef4658835b9d0c8fa9d876.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fd77c42eef24774887556e184ab81f6.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_off00005ffa.bin
1128a4c96b262039d917be62454d1daad29ec718a69fcc5399fc8b051e92177d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFA 5568 bytes
font_01_sfnt_off000072e0.bin
30b09cc3a2c323aa979e4f33d3548503a799b3b5d0379f83e4a875a0757f4eb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72E0 10940 bytes
font_02_sfnt_off0000983e.bin
f20e9ba3c713f1ca14af521bfc534c4ac5351cd2a0113cfb4e738a2c6b7ed2a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x983E 17056 bytes

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