Malicious PDF — malware analysis report

Static analysis result for SHA-256 290b7eff2b8373b1…

MALICIOUS

PDF

193.1 KB Created: 2020-08-25 15:25:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6f02feedea2c30b410ec9016b6f5c2c SHA-1: 275feff85f33b14e3020ba139cee3981acd49c2f SHA-256: 290b7eff2b8373b1ac6713f39eb68ac642dfcb6294d607a0e9f91b388f47042f
92 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL points to 'ttraff.ru', which is known for redirecting to malicious sites. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to trick the user into visiting this malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=national+radiological+protection+board+guidelines
    • http://files.fundamentaladvantages.net/uploads/1/3/1/8/131856492/44c447ae56412f.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/loop_through_object_javascript.pdf
    • https://cdn.shopify.com/s/files/1/0433/1051/4334/files/pevasabebimefenutiwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0319/1193/files/30062416141.pdf
    • https://cdn.shopify.com/s/files/1/0428/0634/5895/files/rifibivusosasawe.pdf
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/5041975244.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2023/files/how_do_you_copy_on_macbook_air.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/52385640246.pdf
    • https://cdn.shopify.com/s/files/1/0432/2358/0835/files/95333364302.pdf
    • https://cdn.shopify.com/s/files/1/0438/0652/3552/files/xomuzodopudolabukuxon.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_off0002bc22.bin
e46ae39ebf4b3462207561c67843d0961ac0662e1c93f8f27ca5171182ff0563		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BC22 5348 bytes
font_01_sfnt_off0002ce4f.bin
ab6a7970c6444373e6aacf9f84aa8195110a77fcde8b9f105179a98db490cf32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE4F 12224 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.