Malicious PDF — malware analysis report

Static analysis result for SHA-256 d54175989d5413c6…

MALICIOUS

PDF

41.3 KB Created: 2020-08-31 01:11:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46eb823772d21f03870aeb166a78b755 SHA-1: 4690847821aa867adcd9f22ac2f71b698b71ffcb SHA-256: d54175989d5413c6fa29ef80d513de35595e65a89255f8d592d014bef99bbb45
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL that is also flagged as malicious. This suggests the document's primary purpose is to redirect the user to a malicious site, likely for phishing or malware delivery. No scripts were extracted from this sample.

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.ru/wix?keyword=black+desert+online+bank
    • https://static.usrfiles.com/ugd/930050_762176c37d764ed3a390fba83f1354e4.pdf
    • https://static.usrfiles.com/ugd/89363e_bb3507c4e46b414bb3a9dff905f88654.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4c0239534bb4abcb72b5598d5bb5b29.pdf
    • https://static.usrfiles.com/ugd/906e9f_92c38cbca435460d9e50fe38ebdb6900.pdf
    • https://static.usrfiles.com/ugd/158fb9_f37e66306f124cee947d593a692f6329.pdf
    • https://cdn.shopify.com/s/files/1/0439/4362/4872/files/ximubas.pdf
    • https://static.usrfiles.com/ugd/3bf302_4f2a61c159cb4d208eba841ea15718a1.pdf
    • https://static.usrfiles.com/ugd/b8c837_4de4d67c5a644ab482c24df1dd9a1e9e.pdf
    • https://static.usrfiles.com/ugd/cf14a4_0563a45236164350bcba1f1e0cdd17f2.pdf
    • https://static.usrfiles.com/ugd/7f16bd_b4346633e68441e9aeaf808cb2a34411.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c31558bff1c4664b5282cef82c857d9.pdf
    • https://static.usrfiles.com/ugd/b972d5_c264fba2d9754872bab91abd436dd920.pdf
    • https://static.usrfiles.com/ugd/77d535_30358d17083440e3860bfbde85bf170b.pdf
    • https://static.usrfiles.com/ugd/5be868_77b0e593a0904284a4baee7f904330f6.pdf
    • https://static.usrfiles.com/ugd/599026_210a51dda49e4734931d62177877f208.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_off00006178.bin
54c8cd2b5460ca117afc7fb86a0a4c7d47ebfa1e4de9de5154cd128155da06b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6178 5188 bytes
font_01_sfnt_off0000731b.bin
0c1e01833eac96cf3ff6b9e9ccbd3a03db86d0889f7403aa509dd6daf54c4a7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x731B 10992 bytes

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