Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3a7306dd846335…

MALICIOUS

PDF

44.3 KB Created: 2020-08-30 04:30:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c0bc683c957600f8a716f6aedc360e0 SHA-1: 040f06fcebc463ca8af601d71556b0a570e8ec5a SHA-256: ee3a7306dd846335bf5a7dce57aa5b4531152b9db9d355dcfe4938c49431b531
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, many of which are likely part of an SEO poisoning or phishing campaign. The primary malicious URL identified is https://ttraff.com/wix?keyword=pr%25C3%25A1tico+viva+quest%25C3%25B5es+da+microbiolog. The document body is heavily obfuscated and contains the same malicious URL.

Heuristics 3

  • 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.
  • 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=pr%25C3%25A1tico+viva+quest%25C3%25B5es+da+microbiolog
    • https://cdn.shopify.com/s/files/1/0455/6704/9893/files/drunkards_path_templates_plastic.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/58538014068.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/69623365938.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/luzekagu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/zakirinumusugaragibamix.pdf
    • https://static.usrfiles.com/ugd/3aee12_a106ef53dd7d4ed8a71c1fa2fbf44962.pdf
    • https://static.usrfiles.com/ugd/4d6844_c35612daa32849fba2bb064cee048c31.pdf
    • https://static.usrfiles.com/ugd/5b604d_662d826d8f7948afa36cb4d34d6c7600.pdf
    • https://static.usrfiles.com/ugd/b8c837_794924bd2501441fa6219088ae1e30bc.pdf
    • https://static.usrfiles.com/ugd/b8c837_3654629aa2064e9a974cda5dc80845c2.pdf
    • https://static.usrfiles.com/ugd/cf79db_19baa39a89fc456aad623762b0f70889.pdf
    • https://static.usrfiles.com/ugd/b8c837_00d44119059045af8d821055747431c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_4dae6cf70624488d80d3fba796d71520.pdf
    • https://static.usrfiles.com/ugd/3aca14_4f10ac345f8446488ffa402c92f1f5f4.pdf
    • https://static.usrfiles.com/ugd/191a6d_6f99b900d081479dac89b258328b2d27.pdf
    • https://static.usrfiles.com/ugd/b8c837_21af8a84258c46dd953fda9a5a1e816e.pdf
    • https://static.usrfiles.com/ugd/91e123_c852696c0cbe4aa8aa10610a6ab58ea2.pdf
    • https://static.usrfiles.com/ugd/9904c2_8d161c45bd1a44de814725e9899ad6e4.pdf
    • https://static.usrfiles.com/ugd/d4a9d6_0016a6e142cf44b8a609b5814cd556e9.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/
    • https://static.usrfiles.com/ugd/9904c2_8d161c45bd1a44de814725e9899ad6e

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000657f.bin
cc144444ab17fea6f028f9d0012df0a2fa9b07ad63c1d8ecfaa79a0a8fd2c810
pdf-font-stream PDF embedded font (sfnt) at offset 0x657F 6036 bytes
font_01_sfnt_off00007917.bin
360109de3e4f7e2c93b0851b7e126ef3f2be9b706310d1d931db923505ab81c3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7917 13960 bytes