Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8d3270c4c645c33…

MALICIOUS

PDF

90.2 KB Created: 2020-08-31 02:14:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 735df0fcd4026d4d6d10867a770cbb9a SHA-1: 2eaf0adbdd83dcd44fd8cc4a2ac02da7372a33a0 SHA-256: f8d3270c4c645c3382c6f6e21a8e2c3bde7d8e29b8c05d50a2559d3e7f8a82d5
168 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and links to known malicious redirector infrastructure. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to deceive users, likely related to a fake lottery or parcel delivery scam. The primary malicious URL, https://ttraff.com/wix?keyword=annie+jr+play+script+pdf, is used as a lure, redirecting to other content. The presence of numerous PDF links, many pointing to Shopify domains, suggests a link farm used for SEO poisoning or distributing malicious content.

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.
  • 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 JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/wix?keyword=annie+jr+play+script+pdf
    • https://static.u
    • https://static.usrfiles.com/ugd/b8c837_6eed2c5a91d44e8e9499a91278564030.pdf
    • https://static.usrfiles.com/ugd/b8c837_c73cfb7d4e44477f809a204966db6af4.pdf
    • https://static.usrfiles.com/ugd/e2c250_f0d7175bc8b7482ab0c710ef234a4fe9.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/55464119462.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibamiwa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5609/4614/files/sofobazarepojazawaninuke.pdf
    • https://cdn.shopify.com/s/files/1/0435/3510/6203/files/7339234692.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/xumemuwijagili.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/ck2_exclave_independence.pdf
    • https://cdn.shopify.com/s/files/1/0437/8204/5858/files/cv_europass_template_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/99503992770.pdf
    • https://cdn.shopify.com/s/files/1/0430/3834/3322/files/xokanujifanato.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed2e180409194f98bff96c534e57243b.pdf
    • https://static.usrfiles.com/ugd/b8c837_e8373fc8801e47aeabcc6c0299ed8792.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_off00011959.bin
2f2154cbb9088ce7455235a02a951d220a98e994f657662e081b962664606ee9
pdf-font-stream PDF embedded font (sfnt) at offset 0x11959 5316 bytes
font_01_sfnt_off00012b79.bin
16147cf2ebf6118248a32f585d03a02aadb4453c09a2e073224a1f002aefabd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x12B79 15492 bytes