Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e15f26bfadb3f2c…

MALICIOUS

PDF

51.9 KB Created: 2020-08-30 13:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6be4d8768b93f1f1dc39dfddb273eb54 SHA-1: 79f62b15b99760a218c15098493d22e3d2baab8a SHA-256: 1e15f26bfadb3f2c0b790ca7093e3fdef5cbb2d3e3d74fe2ed647b7dc7e1c640
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to static.usrfiles.com, which is indicative of a link farm. One critical heuristic firing identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/wix?keyword=roux+method+pdf'. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution. 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=roux+method+pdf
    • https://static.usrfiles.com/ugd/d55797_aa307709e4604b2a8c673cb19f38f18a.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d1bd5baa19547078d6a8cbcd280e828.pdf
    • https://static.usrfiles.com/ugd/fd3290_e058ebbe33ca46aeb9136a0f287a6587.pdf
    • https://static.usrfiles.com/ugd/2813e2_ef99d5d6b9184c3ea443989506420d20.pdf
    • https://static.usrfiles.com/ugd/e6092c_d019311fe2414a2a91b33093dbf7d6ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_73bd2cffd2074b3da95b4760d81bd000.pdf
    • https://static.usrfiles.com/ugd/b8c837_00d9617cd6414dbaa5b2bd145d000ada.pdf
    • https://static.usrfiles.com/ugd/b8c837_da29784fddc941709d1303eb22aad9c3.pdf
    • https://cdn.shopify.com/s/files/1/0433/2208/1448/files/lotarujiposevewekem.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/charmed_1998_season_2.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5366/files/kolokilifuluvafodorizibo.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/95600340577.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/deponowakewab.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/rorurusaxigasoxaxuvobuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/6025/6159/files/87405114605.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
stream_005_off0000a76e.bin
c976b717f470e6ea7dfe51de3d6a96b77e4a8d27bfc3430b2ae60a0116ca3f7f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA76E 17900 bytes
font_00_sfnt_off00006b01.bin
68e240b5eaf9857e6d7952991a6d857a09af02240f7b66ad82564df3f8223b07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B01 4840 bytes
font_01_sfnt_off00007b6b.bin
6fe3a9dfe260b5f0095d9e5bd306ccbc145682a10f67e72b5abd35e2d44def25		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6B 13976 bytes

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