Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbfe4f727e61f39a…

MALICIOUS

PDF

77.2 KB Created: 2020-08-29 07:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae017eaa8103df2001d8e52ddbe1e809 SHA-1: 5d2db47493bacdd516c21c9726cfa0778f11e3a6 SHA-256: fbfe4f727e61f39a437421c012aa8324958e95eeaba366d806a55402dc66e47e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded JavaScript and a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/wix?keyword=child+support+tennessee+login'. The document body, though heavily obfuscated, contains text related to 'child support tennessee login', aligning with the SE_INVOICE_LURE and SE_CALLBACK_LURE heuristics. This suggests the document is designed to trick users into clicking the malicious link under the guise of a login or payment-related issue, likely leading to credential theft or malware download.

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=child+support+tennessee+login
    • https://static.usr
    • https://static.usrfiles.com/ugd/b8c837_da713ef5824e4835ada86ddc9f8d35a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_685c5de96c4c4fb7b9e312da8da0a627.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e1b253cbb1f4a0d8a0cbfac212b163b.pdf
    • https://cdn.shopify.com/s/files/1/0434/3683/4981/files/42015193345.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/20456042767.pdf
    • https://cdn.shopify.com/s/files/1/0449/5199/4536/files/pajoludux.pdf
    • https://cdn.shopify.com/s/files/1/0428/1624/1831/files/84670337689.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/bobigoruxukipiradiwenuwuv.pdf
    • https://static.usrfiles.com/ugd/b8c837_a97c488d32be40fe8217e8406d7f95f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d26706714284b4f9fb624b41232f538.pdf
    • https://static.usrfiles.com/ugd/b8c837_1410f3e0148a46feb1339822ff8d32aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0c3cb85d60d483fbed9a920a1dc5fa8.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_off0000f2d8.bin
9539f7cf722d790843805914e182a28939bc0dc1ce3b4f862b2e9f537d5986fb
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D8 4916 bytes
font_01_sfnt_off00010388.bin
457574a5e1d770ccdf9a19849c9a6be841fe9c9682df43c824178615a0733a1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x10388 10548 bytes