Malicious PDF — malware analysis report

Static analysis result for SHA-256 b336162cd6951c51…

MALICIOUS

PDF

43.0 KB Created: 2020-04-13 05:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b78f9f2d1658b3e4c34038c84a9fefb3 SHA-1: 09638999076cceb82beb4ebeea863f0a92a16959 SHA-256: b336162cd6951c51b89452f5b302446b7b8f4668b95335f5122b3058776e4f52
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm, suggesting a lure related to children's medication dosage. No scripts were extracted, limiting the analysis of direct payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bluedotcbd.net/uploads/1/3/0/3/130324167/130324167.html#children%27s+mucinex+cold+cough+and+sore+throat+dosage
    • http://xiangrisanhe.com/uploads/1/3/0/2/130291783/5949699.pdf
    • http://jfcambridgeresources.com/uploads/1/3/1/6/131606020/2614166.pdf
    • http://thegraphicsquad.com/uploads/1/3/0/3/130379204/068f138d.pdf
    • http://masiautosales.com/uploads/1/3/1/4/131437069/lemeb.pdf
    • http://michellesusanmarketing.com/uploads/1/3/1/4/131452947/7025092.pdf
    • http://pinkfridays.org/uploads/1/3/0/6/130639659/4633688.pdf
    • http://shinkojiki.org/uploads/1/3/1/4/131437005/xoroxajanosoti_rowupinegujuzok_rojipogenutixu_wokusur.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_off0000682f.bin
e622b2e47b88afec2f24bc6e9f7e45f85907ed129056ffc8a2083879fc155248		 pdf-font-stream PDF embedded font (sfnt) at offset 0x682F 9040 bytes
font_01_sfnt_off00008a6b.bin
45c39c4315a5d00962143d4102937301eb2649728d6de39b959633cfc30365c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6B 16144 bytes

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