Malicious PDF — malware analysis report

Static analysis result for SHA-256 854b0256962668a7…

MALICIOUS

PDF

45.6 KB Created: 2020-08-06 12:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4571ba136405280712f8c5d28b751d19 SHA-1: 69303cf6ac874d6b41f9593f5250584b1b8bd6c5 SHA-256: 854b0256962668a7e9d052a92c9bfdfa70b3685ee2a038c2761cd0d0ef412d21
136 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com, which is associated with a lure for 'aditya birla health insurance premium chart pdf'. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links. The document body, though partially corrupted, contains text related to insurance and the wkhtmltopdf tool, reinforcing the lure. The presence of multiple Shopify URLs, some confirmed benign and others unknown, suggests an attempt to blend malicious links with seemingly legitimate ones.

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.com/pify?keyword=aditya+birla+health+insurance+premium+chart+pdf
    • http://files.myshabbychicdesignsbycarla.com/uploads/1/3/0/7/130776607/8839240.pdf
    • http://nogef.bethanychicago.org/uploads/1/3/1/3/131384635/5085169.pdf
    • http://files.innovativemx.com/uploads/1/3/0/8/130874241/895825457.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0011/files/junupemowis.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/wejikix.pdf
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/business_communication_skills_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/8865/9100/files/cidos_orgnicos_e_inorgnicos.pdf
    • https://cdn.shopify.com/s/files/1/0437/0359/9272/files/bukuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/form_mcs-_150.pdf
    • https://cdn.shopify.com/s/files/1/0431/0790/9781/files/bengali_to_assamese_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/vanepopixojebinixolexame.pdf
    • https://cdn.shopify.com/s/files/1/0438/1789/4050/files/como_fazer_uma_apresentao_de_empresa_em.pdf
    • https://cdn.shopify.com/s/files/1/0434/2792/2076/files/60517597550.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_off000073c0.bin
d71c4f510d3676707037591044a489ca292c79cd5446876e4d2bf7a8f74ee021
pdf-font-stream PDF embedded font (sfnt) at offset 0x73C0 5628 bytes
font_01_sfnt_off000086b8.bin
bd929d07f7335665368e24be7cd9fc8b2d5fbc68aa11f6a205c3cce570c30a13
pdf-font-stream PDF embedded font (sfnt) at offset 0x86B8 10164 bytes