Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aba0be4458f5bdc…

MALICIOUS

PDF

49.9 KB Created: 2020-08-19 09:43:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e7d5844da7a7da02b1e59902ae7be6dd SHA-1: 5f2baa456150265d8b7443139724f06c9addf0f8 SHA-256: 3aba0be4458f5bdc95b86d360424284409135445cd7ebedda89766a89ebde4cd
130 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'hospital management system admin template' and includes the malicious URL, suggesting a lure for users to click on the link. The presence of a link farm further supports the malicious intent of directing users to external, potentially harmful, sites.

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.
  • 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=hospital+management+system+admin+template
    • http://files.rezinnitelegends.com/uploads/1/3/0/7/130740323/pumepofe-zufivilub.pdf
    • http://luwifot.evelynrswett.com/uploads/1/3/1/6/131636725/5923166.pdf
    • http://files.nsnaloxone.com/uploads/1/3/0/7/130739789/29e5e525abaf8.pdf
    • http://files.headtotailhealing.com/uploads/1/3/1/4/131454620/2569359.pdf
    • https://cdn.shopify.com/s/files/1/0431/0410/8711/files/1000_instagram_followers_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/wikikepubu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7740/files/31579227989.pdf
    • https://cdn.shopify.com/s/files/1/0431/0014/3777/files/apache_hive_cookbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0459/6485/3408/files/acc_aha_lipid_guidelines_2017.pdf
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/79044625261.pdf
    • https://cdn.shopify.com/s/files/1/0431/1040/0153/files/83096940423.pdf
    • https://cdn.shopify.com/s/files/1/0439/1341/2760/files/built_environment.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078b8.bin
4bd74ec0dfe7961b0a7a4e3f6f72dd1eb5ad95fd23d269edda5e58d1df31d965		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78B8 5036 bytes
font_01_sfnt_off000089bc.bin
bf71556744bec4e8e1ab5f9c16b7b79a808b46ae2b12af7eccf08301f8558877		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89BC 10084 bytes
font_02_sfnt_off0000ac45.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC45 4324 bytes

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