Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc00ac3207794181…

MALICIOUS

PDF

40.7 KB Created: 2020-09-01 00:00:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0655148ccbdf27c05d3a4735451f9a7 SHA-1: 737198be6a5493bc334fe19fe8bfc81f97137747 SHA-256: cc00ac3207794181c653dff065b88cef51019b97cbfe4cf39f90915c3199627d
152 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to trick users into visiting a malicious site. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic. No scripts were extracted, and the family is unknown due to the lack of specific indicators.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=glory+to+hong+kong+piano+sheet
    • https://cdn.shopify.com/s/files/1/0431/9654/7230/files/8379172455.pdf
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/how_to_check_checkbox_in_excel_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/4074/1275/files/us_gambling_appellate_body_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/dewaran.pdf
    • https://cdn.shopify.com/s/files/1/0429/8611/1137/files/vosewowokelunowunijivifov.pdf
    • https://static.usrfiles.com/ugd/b8c837_4180453556b74d8f9be19202241c0252.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e04610e10ff46a4b195ffd7d0581162.pdf
    • https://static.usrfiles.com/ugd/b8c837_905df093d5004ff2890dfef871bb503e.pdf
    • https://static.usrfiles.com/ugd/0511f5_bd61af686c3a4d6d9600ea03014cf19f.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_a724da1082884d7bb625293a7b210393.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_b30b0f93adad4977b6d1f046f9c2b281.pdf
    • https://static.usrfiles.com/ugd/15ebe2_7fcd0171f482448e9ac81002c0665648.pdf
    • https://static.usrfiles.com/ugd/6f58fb_f7b8cc4b43ef45fab325e99dbf337ef7.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_off00006125.bin
5250e9a2c3592f03da25273ecbd36ea57161c6248ad5e44fac941278750195fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6125 5276 bytes
font_01_sfnt_off00007320.bin
b63e1c6595dfc186e497f1090c7beb28041fe3bb70e46bb2985a7bfa1beab5ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x7320 10580 bytes