Malicious PDF — malware analysis report

Static analysis result for SHA-256 41cfa600578ed298…

MALICIOUS

PDF

58.6 KB Created: 2020-08-15 05:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 979f77ce4f94df43f1f264ef62205ee1 SHA-1: cd7bcbe1070539f48d87e1d76de410e834180a4d SHA-256: 41cfa600578ed2983eaa096a75ede8f7ab72f5ac28a4d8a9c6bbdf12354b08f9
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it features a PDF link farm heuristic, indicating a large number of external links, many hosted on 'cdn.shopify.com'. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, contains the malicious URL, suggesting the primary intent is to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=fraction+worksheets+adding+and+subtracting
    • http://files.rojasirvin.com/uploads/1/3/1/3/131382274/dulax_xojabezoz.pdf
    • http://files.empowerugandanow.com/uploads/1/3/1/6/131606025/8063821.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4936/files/cg_bhuiyan.pdf
    • https://cdn.shopify.com/s/files/1/0434/5344/8358/files/introduction_to_genetics_and_evolution.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/23003022418.pdf
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/zizaboweletatixopuxewebum.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/jilumago.pdf
    • https://cdn.shopify.com/s/files/1/0430/2707/1127/files/jefazogakabu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5041/6793/files/minecraft_fnaf_map.pdf
    • https://cdn.shopify.com/s/files/1/0437/6566/1845/files/descargar_libro_apicultura.pdf
    • https://cdn.shopify.com/s/files/1/0428/9232/9116/files/83448241442.pdf
    • https://cdn.shopify.com/s/files/1/0438/1832/0034/files/dodoruvi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008631.bin
9337857e44a4fe7a4fd863841c47d5621ad4a9484ab29c104d682875d375c5b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8631 5300 bytes
font_01_sfnt_off00009835.bin
0368240da0b71a88d89960aceaa4e8ab8b496c4960795b3063fd4fb2b9918407		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9835 9712 bytes
font_02_sfnt_off0000b9b6.bin
64e13322576ebe4b9a20b8efdba1cb2c8bc01163a7c4e1ba1f667a2d7cf8e6df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9B6 16116 bytes
font_03_sfnt_off0000ce8f.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE8F 4324 bytes

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