Malicious PDF — malware analysis report

Static analysis result for SHA-256 4420a07873c17dbb…

MALICIOUS

PDF

39.0 KB Created: 2020-09-09 15:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7a6ab239e4c99408af903c3f4289917 SHA-1: 05be76d7e94a2b02cfbf859461a9f2be86c2466a SHA-256: 4420a07873c17dbb3c65c02e5101944b1192355a44c9ad34d02cfcd6d54c0bb2
170 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/pify?keyword=vevo+video+er+apk'. Additionally, it exhibits a high-severity heuristic for a browser extension installation lure, indicating a social engineering attempt. The document body, though heavily obfuscated, contains references to 'Vevo video er apk' and the malicious URL, reinforcing the lure. The presence of a PDF link farm further suggests an attempt to distribute 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.
  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.me/pify?keyword=vevo+video+er+apk
    • https://cdn.shopify.com/s/files/1/0434/7723/7913/files/pirite.pdf
    • https://cdn.shopify.com/s/files/1/0431/7793/5005/files/fogufesidelevomade.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/99779593258.pdf
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/setivugibuxevudukisoxema.pdf
    • https://static.usrfiles.com/ugd/2b3f46_a7a58b0ad03b48bda1dd09553d3c3c40.pdf
    • https://static.usrfiles.com/ugd/cf5aa9_eea3cd5e356d42169427050507c5d1c7.pdf
    • https://static.usrfiles.com/ugd/b1dabf_f4eba620e4bb4e45b7c2e9ceb76d0e99.pdf
    • https://static.usrfiles.com/ugd/a7074a_637e84b6b8b64391a17d4fefcce069d1.pdf
    • https://static.usrfiles.com/ugd/696117_71e663ebd8ab41fdba35ef5ef9fb6ce8.pdf
    • https://static.usrfiles.com/ugd/b8c837_9bc31f4d6b524514a431ef7b2747371e.pdf
    • https://static.usrfiles.com/ugd/b5472a_a9c6a5086b604119b720168724f3d8fb.pdf
    • https://static.usrfiles.com/ugd/027f51_499047e2ef1047588d69386f307d60e7.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/89372955504.pdf
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/mitsubishi_eclipse_service_manual.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_off00005c12.bin
4dcc2322812dde27d5f02fc50c79b47a16adbaa528af9c7e9b362787db8d94b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C12 4832 bytes
font_01_sfnt_off00006c9e.bin
12dcff519118d493bd75da3ed5b77fef14ca7bd6d8e4c50c25716637f2c2f330
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9E 10244 bytes