Malicious PDF — malware analysis report

Static analysis result for SHA-256 59d3d4eddfa59002…

MALICIOUS

PDF

43.9 KB Created: 2020-08-30 05:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ef9c5bfc0598de808a1177946099e62 SHA-1: bb06dfe4cd052904ea0cc0d80cdffaa0dc965ab3 SHA-256: 59d3d4eddfa590026ced4131bb79eae2e47fdb349dcb74d0556a3c60a6eda914
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=player4youtube+download+problems', suggesting a lure for users seeking software downloads. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger link farm, likely for SEO manipulation or distributing malicious links. The primary malicious IOC is the redirector URL.

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.cc/wix?keyword=player4youtube+download+problems
    • https://static.usrfiles.com/ugd/de3d83_8859f9bc660345f5b2095e06f4877422.pdf
    • https://static.usrfiles.com/ugd/b8c837_821e933222a64af9b7de43d3807d34f3.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_619efa79b48e4aa9bef8ec85a8113ac0.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c31454b5c9f4623b96c73110c8518bf.pdf
    • https://static.usrfiles.com/ugd/f09a9d_129031a7bfb04e56a78206daa744aab8.pdf
    • https://static.usrfiles.com/ugd/b8c837_5b60b0c50f844d458b006f84c3d5d206.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6b3c6a83be949d4a88bb468d67fe287.pdf
    • https://static.usrfiles.com/ugd/432b07_d04fe9c07ba343bfae05e726af4717b7.pdf
    • https://static.usrfiles.com/ugd/cafc24_88031677196949b58ef9cb57064b8bec.pdf
    • https://static.usrfiles.com/ugd/2e79a6_d050242eeda54e06b4f53277705f8f4e.pdf
    • https://cdn.shopify.com/s/files/1/0448/3730/6529/files/siluwexibalemagokizutozu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9328/7331/files/angiofibroma_nasofaring_juvenile.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/11152960744.pdf
    • https://cdn.shopify.com/s/files/1/0439/0407/3883/files/16708518645.pdf
    • https://cdn.shopify.com/s/files/1/0433/3522/1403/files/fikejojurozorefamozaja.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7820/files/factors_affecting_chemical_equilibrium_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/2141/7123/files/days_of_the_week_calendar.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/
    • https://static.usrfiles.com/ugd/caf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d82.bin
c2bdc7f445fab5bf8f5705b2ac0b5e2d1544ea2984abb32bfa86468276a6fa1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D82 5528 bytes
font_01_sfnt_off00008046.bin
ad8c7d6667d61e60a11423eb8542e93b36ed331a08f6370e423497ab3c79ef62
pdf-font-stream PDF embedded font (sfnt) at offset 0x8046 9988 bytes