Malicious PDF — malware analysis report

Static analysis result for SHA-256 55ddf84c85b9e814…

MALICIOUS

PDF

63.1 KB Created: 2020-08-31 13:06:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 041acc43870bc547043796654bf7c6c2 SHA-1: c6ed6db0e4be646cf7043dd8d9177143f5cedf23 SHA-256: 55ddf84c85b9e814546a1cee3a27c96f6bc851b0f6e0b6492a5bbe8a6987b5c9
160 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and an advance-fee scam lure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=lottery+dominator+scam', which is also flagged as a malicious redirector. The presence of numerous embedded links, many pointing to cdn.shopify.com, suggests a link farm used to distribute the scam. The primary attack pattern is social engineering via a fake lottery or prize notification.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=lottery+dominator+scam
    • https://static.usrfiles.com/ugd/b8c837_ec9e617d6fa0403a8e6f8d8fe381c119.pdf
    • https://static.usrfiles.com/ugd/217d68_61c145cc061941e79918f08182982e9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_568298390be145088837aed6660c98ef.pdf
    • https://static.usrfiles.com/ugd/57c819_eca28ddcb6954250b114c9779d7118b6.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/6843425184.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2902/files/fogosuradikiduzute.pdf
    • https://cdn.shopify.com/s/files/1/0434/1510/9797/files/sawiwotigegexuvupupaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tomazemajetel.pdf
    • https://cdn.shopify.com/s/files/1/0433/9374/5046/files/76470400637.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/zoxatat.pdf
    • https://cdn.shopify.com/s/files/1/0439/0620/3803/files/cyclocross_platform_pedals.pdf
    • https://cdn.shopify.com/s/files/1/0434/5521/7814/files/64239140771.pdf
    • https://cdn.shopify.com/s/files/1/0454/7454/5816/files/mastering_blockchain_andreas.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8185/files/tuletulinolojurozitazuten.pdf
    • https://cdn.shopify.com/s/files/1/0435/5925/6232/files/korean_action_movies_hd.pdf
    • https://cdn.shopify.com/s/files/1/0463/6635/9707/files/19913725882.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_off0000bac9.bin
f6244d3f8c3043848ae1f3d1a6e145b07974a911d109a69cc2e5e4b9e523710c
pdf-font-stream PDF embedded font (sfnt) at offset 0xBAC9 5096 bytes
font_01_sfnt_off0000cc0b.bin
f52688a77f0dfc495221b0bd27a8a46424c2f9f6f21fd2f261b281c76e1883b4
pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0B 10304 bytes