Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1d9a5aae76bc5e…

MALICIOUS

PDF

38.8 KB Created: 2020-09-01 00:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 748578b0a366ba54fc24239ba903cd7b SHA-1: eedde6c5d3ec672fadce546f9217a65bb7cbd297 SHA-256: ec1d9a5aae76bc5e6148314f7aca88282a19834e01c8eda40b504b583bd9406e
160 Risk Score

Malware Insights

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

The PDF file contains a social engineering lure, presenting itself as a 'best pdf reader for windows 10 pro' to trick users into clicking a malicious link. The primary malicious URL, https://ttraff.cc/wix?keyword=best+pdf+reader+for+windows+10+pro, is identified as a redirector to potentially harmful infrastructure. The document also hosts a large number of external PDF links, many pointing to shopify.com, which is a technique often used to manipulate search engine rankings or distribute further payloads.

Heuristics 4

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=best+pdf+reader+for+windows+10+pro
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/15444103723.pdf
    • https://cdn.shopify.com/s/files/1/0437/3676/0485/files/tabovuxinuwaba.pdf
    • https://cdn.shopify.com/s/files/1/0461/4186/6137/files/95234380431.pdf
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/xasujiwikoluwelezukonogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2837/2886/files/borderline_personality_disorder_test.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8c547cbf4ad45df9bf4e94c2775807b.pdf
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/65501744473.pdf
    • https://cdn.shopify.com/s/files/1/0429/1995/2550/files/vavifi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/novenubetaxavanoje.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/molukutozaruxavupemifin.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_off00005999.bin
4080e42a55780ca931fc74d042f0509d518707feec7330c9c550d70fff763cb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5999 5336 bytes
font_01_sfnt_off00006bee.bin
daffd488d5bd9a0fb2ebd6db409780017b67ebfdd747f14ecd0420afbba42a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEE 10196 bytes

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