Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f0ec4a5bd118dc6…

MALICIOUS

PDF

38.0 KB Created: 2020-08-18 13:11:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80a7808960a9bcf9b58a300742680918 SHA-1: 02a3efd6c3588a3c22f0bf0a3079eb5f5a1c23e6 SHA-256: 8f0ec4a5bd118dc6333396647ab35fe50b001fbaf785bcdc37b91a80e09412cc
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=free+plants+png+format. The document body, though heavily obfuscated, contains this URL and other embedded links, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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=free+plants+png+format
    • http://files.bethelchristian.com/uploads/1/3/0/9/130969671/buzesazugi.pdf
    • http://files.groepberton.com/uploads/1/3/0/9/130970008/815233dbfad4b.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/34069971827.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rexalomofovuwazeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/devebezaz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/wojiretoxomebe.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/ledapigomasatoxim.pdf
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/plague_inc_fungus_mega_brutal.pdf
    • https://cdn.shopify.com/s/files/1/0434/0449/2950/files/statistical_analysis_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0451/7340/7893/files/xupefep.pdf
    • https://cdn.shopify.com/s/files/1/0434/8208/7576/files/24671997726.pdf
    • https://cdn.shopify.com/s/files/1/0430/2975/8103/files/43652173804.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_off00005818.bin
c75dd6f38919b77231859344d623e7b7578581314c0d86c9d0c7dc7ce59574a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5818 5176 bytes
font_01_sfnt_off0000699f.bin
f6b46e1fc7b1b6668c4445cb93e31fe4cf5f12c67995101bf0998a420d6944a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x699F 9864 bytes

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