Malicious PDF — malware analysis report

Static analysis result for SHA-256 c50ea6634ac9b411…

MALICIOUS

PDF

65.8 KB Created: 2020-04-06 10:07:12 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 05beee09dfe7a28bd51ac1eba34fc560 SHA-1: 112ce80db48c3dfa850c1de27460962d411513e2 SHA-256: c50ea6634ac9b411abec9e029e815dfc879f6179a4b50b4bfe4e2b2f6d514aab
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links to various domains, a technique often used for SEO link farming or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this pattern. The embedded URLs suggest a redirection chain, likely leading to further malicious sites or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://teamclm.com/uploads/1/3/0/4/130475938/130475938.html#longest+english+word+with+only+one+vowel
    • http://cecoxjr.com/uploads/1/3/0/5/130590096/vaxavo.pdf
    • http://getfaxfree.com/uploads/1/3/0/4/130476885/nebaf.pdf
    • http://stcintegratedsystems.com/uploads/1/3/0/6/130621344/61eca6caa.pdf
    • http://ncpchoirs.com/uploads/1/3/0/5/130588659/7450191.pdf
    • http://ortizclaudia.com/uploads/1/3/0/5/130543588/0ff536.pdf
    • http://flashinthepancafe.com/uploads/1/3/1/0/131071181/tukusagusidelubad.pdf
    • http://progresshealth.org/uploads/1/3/0/5/130543093/65c462.pdf
    • http://second-stepconsulting.com/uploads/1/3/0/5/130550664/5152033.pdf
    • http://seedstexas.org/uploads/1/3/1/3/131381781/dajuwenoz.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_off0000c368.bin
1645812f9ae7d353b384a595cf1afdef4fae632e2d4e10bf72ba0aab0dc125e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC368 8868 bytes
font_01_sfnt_off0000e44e.bin
e2c864ba45bf25cd50045c42f22d3dc73ef8f5639ae196ce40bf0b5a0cc204e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE44E 16348 bytes

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