Malicious PDF — malware analysis report

Static analysis result for SHA-256 376602cf9b26134b…

MALICIOUS

PDF

39.5 KB Created: 2020-08-25 17:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 545f9b38d81a76f0324b7882856b78b0 SHA-1: 729b3dc7bac766bd8ce31ac76320d279883cb6d8 SHA-256: 376602cf9b26134b630958382ecff3342d12fa97c473231e96f26355e84dcf42
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=information+about+cat+examination'. This URL is presented within the document body, disguised as information about cat examinations, to trick users into clicking it. The PDF also contains a link farm heuristic, indicating a large number of external links, many of which point to Shopify domains. The primary malicious IOC is the ttraff.com redirector.

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.com/pify?keyword=information+about+cat+examination
    • http://verepuji.justforyouspa.com/uploads/1/3/0/9/130969686/bilir.pdf
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/61039848044.pdf
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/85753290351.pdf
    • https://cdn.shopify.com/s/files/1/0429/6520/5141/files/refutade.pdf
    • https://cdn.shopify.com/s/files/1/0429/6212/4959/files/8811951420.pdf
    • https://cdn.shopify.com/s/files/1/0433/9436/7644/files/isaca_risk_management_framework.pdf
    • https://cdn.shopify.com/s/files/1/0454/2365/7128/files/11978719874.pdf
    • https://cdn.shopify.com/s/files/1/0433/0802/3966/files/fegaxufudiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24810932871.pdf
    • https://cdn.shopify.com/s/files/1/0436/7260/0729/files/476584838.pdf
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/rezekudosuwavituzerira.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/wazebalodugegarimeju.pdf
    • https://cdn.shopify.com/s/files/1/0430/5593/9733/files/46502687068.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_off00005d92.bin
6b3a0eba41bcff93d6850c567381c2d5b5cb260bc061a203b59e785f48e9b050
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 4960 bytes
font_01_sfnt_off00006e57.bin
17b862a2ec874a41a151167baff9a02782058fe1b58dd2ef2c82f67862a5bf1f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E57 10260 bytes