Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e26276d5b747d6…

MALICIOUS

PDF

41.1 KB Created: 2020-08-30 10:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fb8be8915f0ba438c738fb93ce7ca16 SHA-1: a95729f54c8306841286f9735768f9164a73d3f4 SHA-256: 68e26276d5b747d6baf590ef7419508572e2604256447daf08e998d8f6ce27bc
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as search results for obituaries, but the primary link redirects to a known malicious infrastructure. This suggests a phishing or redirection attempt to a malicious site. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to lead the user to a compromised site or download further malware.

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=new+braunfels+tx+newspaper+obituarie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/3541/0077/files/anatomia_quirurgica_de_cabeza_y_cuello.pdf
    • https://cdn.shopify.com/s/files/1/0436/9226/1529/files/modul_akuntansi_keuangan_lanjutan_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/xexobevegejab.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f9e48703d9c436bac8ed881697d6ead.pdf
    • https://static.usrfiles.com/ugd/b8c837_9103ccc0c81647c68040e4b2ae5c9f27.pdf
    • https://static.usrfiles.com/ugd/76de1a_98c94d276d8743bab81ca19a83a133aa.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_37b11f3f99bc437baaecd980b6f56ed6.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sobobubujuwin.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/28310148001.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005687.bin
9bf6ebfd54973bdc1b2eac542865575e3bc4177b21c586b53b609e57bf8ba9e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x5687 5048 bytes
font_01_sfnt_off000067d4.bin
0d4accadff4ef0148c86b9a57a91197e0e096aa191fa2856b3b4121a173c11b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x67D4 9920 bytes
font_02_sfnt_off000089e0.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x89E0 4324 bytes