Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeba527f6560eb9e…

MALICIOUS

PDF

48.5 KB Created: 2020-09-02 07:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce377de7e6392963115fea943bdfa4dd SHA-1: c24df9990ba3026c4f039be26b53b2ea55baa4b5 SHA-256: eeba527f6560eb9eb8492a83c3b3955ef2ac57203653276ed30c0bc1cbf0589f
168 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify-hosted PDFs. The presence of a 'password-protected archive lure' heuristic suggests the document is part of a multi-stage attack, likely intended to trick users into downloading a password-protected file, which would then require a password provided within the document itself to decrypt and execute.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=manual+chevrolet+sonic+2012+espa%25C3%25B1ol
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/robuserukedudopuvawuput.pdf
    • https://cdn.shopify.com/s/files/1/0429/7588/7523/files/67787616696.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejukimuvili.pdf
    • https://static.usrfiles.com/ugd/cfbfd2_ceb250a74a5d4a3c96aae9408ee0f518.pdf
    • https://static.usrfiles.com/ugd/4aae87_9dd743a6ca60499786d8982a76b120c1.pdf
    • https://static.usrfiles.com/ugd/a2e20a_fd71ac42e8224580ba8efdeaaf0cf852.pdf
    • https://static.usrfiles.com/ugd/eb4c03_6a50e616b21d43c4b6bcfad52ca2f5c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_8432177643f44956bbf81b136dba065b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ed2ea15a0cd4167ab7d6c4bb16740d8.pdf
    • https://static.usrfiles.com/ugd/ecec20_e2f90ba1226047709e2cfb32008c4b42.pdf
    • https://static.usrfiles.com/ugd/b8c837_83df093e9ddf49b2bd5c8590211b8142.pdf
    • https://static.usrfiles.com/ugd/de3d83_15e30d9f1c574a278f612ec05312dbd0.pdf
    • https://static.usrfiles.com/ugd/ec0c41_49c3281d241c45528bd438920b28b116.pdf
    • https://cdn.shopify.com/s/files/1/0433/6985/7176/files/biology_syllabus_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/1627/2547/files/fiwigemewovagelo.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
font_00_sfnt_off000072b0.bin
d31ee4c97273a6aaa290774d952c803aef8b78545a7946b4a8f0cb2c4ae7c38f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B0 5624 bytes
font_01_sfnt_off00008593.bin
a7876d7ce526cb781a02cea143a177a43b11b73a38be301278d725668c747458		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8593 1944 bytes
font_02_sfnt_off00008ee1.bin
a30b4aebc0d8c97e462595a5c2b1fc6f2118d80bf40bcd06637d803feada4779		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE1 10444 bytes

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