Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb24ca0bb9b61df5…

MALICIOUS

PDF

48.9 KB Created: 2020-08-28 12:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 857ebcba50dab559f734b0c5bd07cc27 SHA-1: 9cc4903cb1c45c77a1b8823cf550b0411f6a2ad7 SHA-256: fb24ca0bb9b61df551943d8abfb9d8d8322ee00e2e853009e1548c6a67b30305
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'Oracle java se 8 associate certification' and the URL 'https://ttraff.ru/pify?keyword=oracle+java+se+8+associate+certification', suggesting a lure to a potentially malicious site disguised as certification information.

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=oracle+java+se+8+associate+certification
    • http://jakegid.socialmissionmetrics.gwhwi.org/uploads/1/3/0/8/130814328/zubuzudofojupif.pdf
    • http://tizatexi.christinedeitner.com/uploads/1/3/1/4/131482975/4172821.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/mupabuferijerafatotizege.pdf
    • https://cdn.shopify.com/s/files/1/0433/1254/5950/files/bhojpuri_gana_arkestra_dj.pdf
    • https://cdn.shopify.com/s/files/1/0449/8325/5198/files/catecismo_menor_martinho_lutero.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/64773214604.pdf
    • https://cdn.shopify.com/s/files/1/0439/5424/1694/files/core_java_quiz_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/charcoal_production.pdf
    • https://cdn.shopify.com/s/files/1/0431/6689/2181/files/takekirud.pdf
    • https://cdn.shopify.com/s/files/1/0438/4843/3829/files/wujidozudovap.pdf
    • https://cdn.shopify.com/s/files/1/0435/1927/9258/files/77247789844.pdf
    • https://cdn.shopify.com/s/files/1/0437/2057/3082/files/wudenosot.pdf
    • https://cdn.shopify.com/s/files/1/0434/2199/1079/files/52895370833.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_off0000727e.bin
59ed51625f83eb1ba1d0eb12461f96a2f3bade81e9d41484f7f3cb279c668d95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x727E 5020 bytes
font_01_sfnt_off0000839d.bin
bd9e939a83c5b790fab758ffbc8cafab8906d5224add722cb84f9d27253a4f02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x839D 10748 bytes
font_02_sfnt_off0000a817.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA817 4324 bytes

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