Malicious PDF — malware analysis report

Static analysis result for SHA-256 52cc6997cb77532e…

MALICIOUS

PDF

53.0 KB Created: 2020-08-15 16:44:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ce60ca914a2734e35c36ada4ac39f7c SHA-1: 33c6aaa9c055aa0dc5d2171b6dfcbe8ab787407e SHA-256: 52cc6997cb77532e04c9c955ff37185e3508e5fd7241fb890ac2728c41c08c9e
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL, https://ttraff.ru/wb?keyword=water%20level%20indicator%20and%20alarm%20system%20pdf, is likely used to lure victims into downloading further malware or phishing for credentials. The document body, though heavily obfuscated, contains references to the malicious URL and appears to be a lure for a technical document.

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/wb?keyword=water%20level%20indicator%20and%20alarm%20system%20pdf
    • http://gexebaxe.inspire2transform.org/uploads/1/3/1/6/131636648/87b0bd8.pdf
    • http://files.jeansheridan.com/uploads/1/3/0/9/130969695/fd542e348c0c423.pdf
    • http://bofolu.kendraswiley.com/uploads/1/3/0/8/130874284/7338235.pdf
    • http://files.springvillebaseball.com/uploads/1/3/1/4/131406507/6928486.pdf
    • https://cdn.shopify.com/s/files/1/0434/6406/5188/files/clinical_electrocardiography_zimmerman.pdf
    • https://cdn.shopify.com/s/files/1/0437/0844/8920/files/72725602830.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/behindertenrechtskonvention_der_vereinten_nationen.pdf
    • https://cdn.shopify.com/s/files/1/0429/4931/2665/files/bioremediation_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0433/3872/7589/files/gugotezowesarabatazeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7269/files/53664419671.pdf
    • https://cdn.shopify.com/s/files/1/0438/8660/8552/files/comparison_of_adjectives_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/5132526759.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/muxuza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lubogalevomiwubojaxijafax.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48787523288.pdf
    • https://cdn.shopify.com/s/files/1/0433/7234/7550/files/sufifubadunewiv.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_off00008ff4.bin
63b6d7cc1790d33ff200b7a75c97b4690654acdb73223dc85b1165e01c57bded		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF4 5476 bytes
font_01_sfnt_off0000a28f.bin
ccaaeb7a43213cc438ece343595fb982c7538961fc41fd3280213372b22af9e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA28F 10656 bytes

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