Malicious PDF — malware analysis report

Static analysis result for SHA-256 411823ce947923be…

MALICIOUS

PDF

39.0 KB Created: 2020-09-02 15:49:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ef2a143a1a9bb0aee05d644a285781e SHA-1: 26e747f7576525d301a87ff19db6a8e0919f8a5c SHA-256: 411823ce947923be11d79d33a721a0042d27fe04a7afee2d0ba18fa7e59424db
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a "link farm" designed to manipulate search engine results. One prominent URL, "https://ttraff.club/wix?keyword=best+instagram+video+er+app+for+ios", is identified as a malicious redirector. The document body, though partially corrupted, contains text related to this lure, suggesting an attempt to trick users into visiting malicious infrastructure.

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.club/wix?keyword=best+instagram+video+er+app+for+ios
    • https://cdn.shopify.com/s/files/1/0434/1121/0398/files/fodumaximewo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/17829580684.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibuzos.pdf
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/35529057974.pdf
    • https://cdn.shopify.com/s/files/1/0430/9804/6621/files/2593130001.pdf
    • https://static.usrfiles.com/ugd/fb83f1_2e0519c46ac541788b08a503dd674138.pdf
    • https://static.usrfiles.com/ugd/b8c837_6da2dc5df60c4aa28a00aed2239a116b.pdf
    • https://static.usrfiles.com/ugd/07625c_a1cbc231d0f640869f74fa9e5024d1df.pdf
    • https://static.usrfiles.com/ugd/105a8c_c47754175453433bb9ae467484b32375.pdf
    • https://static.usrfiles.com/ugd/bdc04d_30bb47c3eb2b4e0fbb49372e63c49c18.pdf
    • https://static.usrfiles.com/ugd/3649d2_b4847db0c9f142759d29a2fe7820708f.pdf
    • https://static.usrfiles.com/ugd/3283b0_2a8838ad15ee4e2792ee401dbe06d11d.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_889386d51a884c728e8719941d8fcdfe.pdf
    • https://static.usrfiles.com/ugd/b8c837_0bdac3d72fea41bc8d36751edac2cd38.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_off00005a5c.bin
37b0a60273a206f61f54c452118cacc9ea9d8db7fa62648b9132c888eea0607a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5C 5436 bytes
font_01_sfnt_off00006cd3.bin
86207118da1048635dfc052aaab6b46e0b0f6cf11d097099cff6528ef4a43d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD3 10068 bytes

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