Malicious PDF — malware analysis report

Static analysis result for SHA-256 030e76528bc0f49e…

MALICIOUS

PDF

57.0 KB Created: 2020-08-31 01:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a7b7a94ad821b70b9194a69a71058c2 SHA-1: 0553c4a03cf86a2e73dc12b2e693e55dbb06be09 SHA-256: 030e76528bc0f49e080d178deb4da69ea6ea29c2e785aa71bde0868e4f6c2650
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded links and text that strongly suggest a phishing attempt, masquerading as a 'mortgage loan audit checklist'. The primary malicious URL, 'https://ttraff.cc/wix?keyword=mortgage+loan+audit+checklist', is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous external PDF links, indicating a potential effort to distribute malicious content or engage in SEO manipulation for malicious purposes.

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.cc/wix?keyword=mortgage+loan+audit+checklist
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_8e2ceeff3cc145b5b535b7725b6ce195.pdf
    • https://static.usrfiles.com/ugd/b8c837_736f5ea4b2b1488188eed9c4b98ec757.pdf
    • https://static.usrfiles.com/ugd/1f5cef_7ce93598d48d4a09b85f9638b45bad50.pdf
    • https://static.usrfiles.com/ugd/b8c837_e28f30ce82144481a06ca84e8cbf376e.pdf
    • https://static.usrfiles.com/ugd/b8c837_c80be75911d54b73a1e4a307ccab9268.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c106e07f52c403bb00a9ab8189df849.pdf
    • https://static.usrfiles.com/ugd/f46427_da6d4bdcc3f14abaa09f497b8c7d2a4b.pdf
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/64489019610.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/rojewediza.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/12729031526.pdf
    • https://static.usrfiles.com/ugd/0dd040_3bec742f1f584b61b35bfea9ca0fedcf.pdf
    • https://static.usrfiles.com/ugd/eed56f_203715127889477a802daacff363163f.pdf
    • https://static.usrfiles.com/ugd/6a22cb_9e90752c375647ed91dc8bd44ec54487.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a179.bin
e94df497cdd767ae0786d10725bce61f8919a1f981aef9ac8a8c596f8c6a94b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA179 5268 bytes
font_01_sfnt_off0000b360.bin
f4114ff1c5ef76f10c80ba56022bf398b5d2dd72f72a7522edca68bdec25e682
pdf-font-stream PDF embedded font (sfnt) at offset 0xB360 10536 bytes