Malicious PDF — malware analysis report

Static analysis result for SHA-256 cebb4f4670815b3e…

MALICIOUS

PDF

46.8 KB Created: 2020-08-27 12:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d2bf01c02b56c03aa45f3a2cb538938 SHA-1: 40b6f1cd4ba1f5d77c2fc09411383fb3bb91f4e2 SHA-256: cebb4f4670815b3e5cbb3a675a0efeae36d6ff9bf11e32fb7b948b979a28191a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=emoji+keyboard+android'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains the malicious URL and several benign-looking PDF URLs, suggesting a lure to a malicious site. The primary intent appears to be redirecting the user to a malicious resource.

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=emoji+keyboard+android
    • http://files.stauntonalliancechurch.org/uploads/1/3/0/9/130969545/758928.pdf
    • https://cdn.shopify.com/s/files/1/0428/9141/1615/files/can_could_may_should_must_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/hallett_cantorian_set_theory.pdf
    • https://cdn.shopify.com/s/files/1/0440/7685/9544/files/83780293935.pdf
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/crestron_am-_200_data_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/6457/3593/files/wipube.pdf
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/phn_mm_chuyn_sang_jpg_online.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/3139028028.pdf
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/18921285219.pdf
    • https://cdn.shopify.com/s/files/1/0463/5508/7526/files/pafezotutokape.pdf
    • https://cdn.shopify.com/s/files/1/0431/9651/4461/files/71899727432.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_off00006b66.bin
4e2f52c6d36cb6af3724feb5ba833921d9737ed6adfba5a9afd4e94dc502a14a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B66 3656 bytes
font_01_sfnt_off0000787a.bin
2e9d2da0fe486173298d89aaf5c42ab13aea9f088e433b68c7aabf96bdf53090		 pdf-font-stream PDF embedded font (sfnt) at offset 0x787A 5100 bytes
font_02_sfnt_off000089cd.bin
704072fd5e3b6b1f693c245a2c9b38161ac8d63d757b177749f382621f070d1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89CD 11148 bytes

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