Malicious PDF — malware analysis report

Static analysis result for SHA-256 e578e05bc32f53b6…

MALICIOUS

PDF

47.6 KB Created: 2020-07-27 21:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be94b2b359d627f63ba18539479036a6 SHA-1: e7fc9177894b23be3d2327319d16b281d1d68c3f SHA-256: e578e05bc32f53b6b22a3c45136764bce6b3c83da9714db557c97d34479490f5
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and redirecting users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=mitutoyo+digital+caliper+user+manual'. The document body, though heavily obfuscated, suggests a lure related to a 'Mitutoyo digital caliper user manual', aligning with the observed malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=mitutoyo+digital+caliper+user+manual
    • http://files.theheightsstore.com/uploads/1/3/2/7/132710797/4057185.pdf
    • http://files.bluewhippetart.com/uploads/1/3/0/8/130813550/tadunegexoruji.pdf
    • http://files.columbuschristianacademy.com/uploads/1/3/1/4/131453045/wuwabidopepa.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/30776548905.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1319/files/podizuxelutinajuwow.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/68614825859.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/nogipanelatowafuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/8522364287.pdf
    • https://cdn.shopify.com/s/files/1/0430/7353/6161/files/65164736590.pdf
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/30360257015.pdf
    • https://cdn.shopify.com/s/files/1/0430/8048/2967/files/rukonudinoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/30646077056.pdf
    • https://cdn.shopify.com/s/files/1/0433/3997/2773/files/likigunagox.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/kapebimedofojusopodogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gubiwunezekubukezo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49726552648.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://cdn.shopify.com/s/files/1/0429/8627/4977/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000720d.bin
4ad6d08980fcac1c7ad5b65830f0dbdaa20cbe2ef936a34c389d1cba729159f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x720D 5380 bytes
font_01_sfnt_off0000844b.bin
4c6c50724865c9b187bfa5a8c80ebe50a7ff1825d14cea65f028e2099673e209		 pdf-font-stream PDF embedded font (sfnt) at offset 0x844B 14564 bytes

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