Malicious PDF — malware analysis report

Static analysis result for SHA-256 4630e5ec2a4a1c88…

MALICIOUS

PDF

37.8 KB Created: 2020-03-20 04:09:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9925e4099e96cc86def23624fa360623 SHA-1: 13a1b03e2ca63c42d801832bc426800ac6be564e SHA-256: 4630e5ec2a4a1c8892e920b4c103d60ac34ee6eef83fa8c2f3a184ac7104a5af
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, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body contains the text 'Juega y aprende', suggesting a lure or educational theme to mask the malicious intent. The ML_NYX_PDF_MALICIOUS heuristic strongly indicates maliciousness. The primary attack pattern involves directing users to a network of external URLs, likely for SEO spam or to host further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://cfthomas.com/uploads/1/3/0/5/130540083/130540083.html#juega+y+aprende
    • http://gotumble.life/uploads/1/3/0/5/130588360/8583345.pdf
    • http://ideascreativity.com/uploads/1/3/0/6/130605228/mapojimekefagig-buminewabefe-wodejewer-davakavaruduna.pdf
    • http://www.eryaglobal.com/uploads/1/3/0/6/130639797/3eb6f45a955.pdf
    • http://becomeroyalty.org/uploads/1/3/0/5/130551697/74b53efffaf0c.pdf
    • http://nolancunningham.net/uploads/1/3/0/3/130324350/janavefijul-radobajus.pdf
    • http://anarogersfitness.com/uploads/1/3/0/7/130776492/4237489.pdf
    • http://sohamswebsite.com/uploads/1/3/0/8/130873923/e22454fd903ed51.pdf
    • http://magic-life.com.tw/uploads/1/3/0/4/130483836/vabepetiwadavuwuxeva.pdf
    • http://wcafethailand.com/uploads/1/3/0/6/130621857/2059309.pdf
    • http://meganacase.com/uploads/1/3/0/6/130621071/1737455.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_off000054f3.bin
30dfb88bdce7195ae0143a22f8e5a57731efbb886cb12b1b55a71dfc7b38097d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54F3 8308 bytes
font_01_sfnt_off00007357.bin
451895f61762ee2c92071758aadde1050fcd1a41f8262062c25ecb60f5c137f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7357 16340 bytes

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