Malicious PDF — malware analysis report

Static analysis result for SHA-256 289de2b5a58868eb…

MALICIOUS

PDF

40.6 KB Created: 2020-08-31 03:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 435c03a9e810b102e05eb9785ae0de65 SHA-1: 1a80e164181f4c6a7c0a288202d0d0ac3c7d6977 SHA-256: 289de2b5a58868ebf88f5e999fad88e33025178359e6f5bb7c4569741fa62c23
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. One of the embedded URLs, 'https://ttraff.cc/wix?keyword=chamberlain+whisper+drive+plus+manual', is flagged as a known malicious redirector. The presence of numerous links suggests an attempt to either distribute malicious content or engage in SEO manipulation for malicious purposes.

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=chamberlain+whisper+drive+plus+manual
    • https://static.usrfiles.com/ugd/b8c837_79205009721042c7a088d05b4efaf80a.pdf
    • https://static.usrfiles.com/ugd/aa14a9_f0e9c2adfd2c420b9f2029f1aa715e1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_779a8f071e7742d2b48e30c0235c4d51.pdf
    • https://static.usrfiles.com/ugd/ca300b_4a752575d2f545879b0eb08df762d712.pdf
    • https://static.usrfiles.com/ugd/353d00_c5eb67b51afd400f9751137af11aa152.pdf
    • https://static.usrfiles.com/ugd/2274a7_799f0e754aae444ca4591641be46fb71.pdf
    • https://static.usrfiles.com/ugd/8127dd_da9d24c28f9649419d589d6feac27168.pdf
    • https://static.usrfiles.com/ugd/b8c837_27658155b2dd4e2f99d7be761abcca94.pdf
    • https://cdn.shopify.com/s/files/1/0432/3577/0535/files/28916076828.pdf
    • https://cdn.shopify.com/s/files/1/0454/6310/9790/files/complete_university_guide_clearing_2018.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_off00005e4b.bin
6553d574b6860ae998e847b47f91b6b18cc0aefab058dcbd931560bc7c8d210c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4B 5396 bytes
font_01_sfnt_off0000708f.bin
0760f02ee9fd5450e47472177313b7b4cd8100c6093d7ac5763a8aed1ce5316b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x708F 10816 bytes

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