Malicious PDF — malware analysis report

Static analysis result for SHA-256 aacbe58d1052200e…

MALICIOUS

PDF

37.6 KB Created: 2020-08-31 00:18:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 638509b5af8cb154a2b7200fe65b7ac7 SHA-1: ad5934d405c03f133ae59beb4ac8e6b0eaf37e2a SHA-256: aacbe58d1052200ea3751cd18a4a0c6426f2d8ec7cda0083ece917148e39843b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a large number of external links, with one identified as a known malicious redirector. This suggests the document's primary purpose is to lure users to malicious websites. No scripts were extracted from this sample, and the document body was heavily obfuscated, preventing a deeper analysis of its specific content beyond the presence of URLs.

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=angel+summoning+sigils
    • https://static.usrfiles.com/ugd/47b1e8_4f42dba01de047d2882a28043ba22375.pdf
    • https://static.usrfiles.com/ugd/a298ce_30add6b934f44517bc0722ede2e55ac3.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce9fe9742dad456c8961b1dc3fe4173d.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_c8626eedb5f4408690291bb3c2015c03.pdf
    • https://cdn.shopify.com/s/files/1/0430/6767/0689/files/committee_meeting_notice_template.pdf
    • https://static.usrfiles.com/ugd/b8c837_f332d745aa2b48bc8a08515fda18557a.pdf
    • https://static.usrfiles.com/ugd/9421c8_230a5d5dd72d419594bf941753412ded.pdf
    • https://static.usrfiles.com/ugd/7598fa_9ac59dcc84dc47f392bed3d55bbe1163.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c29623315d34921a674195d9875160d.pdf
    • https://static.usrfiles.com/ugd/6f7357_8b258a6e249542d68e2a3fd1c6d34290.pdf
    • https://static.usrfiles.com/ugd/50c35f_0db68b261cc34231980c269da76c96ee.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_off00004e07.bin
0c05e8995dde67a6eb9333ca0de3a3ded393dd8cd1fcdc48ce73801eb6bff8ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E07 4688 bytes
font_01_sfnt_off00005df0.bin
982e5951e0b31d526668d111367e1b4ff929fa697c5f5b6d3a52f355440b4d6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF0 14256 bytes

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