Malicious PDF — malware analysis report

Static analysis result for SHA-256 864edbe60796b59b…

MALICIOUS

PDF

34.4 KB Created: 2020-04-23 09:48:40 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9f5c21e35f8150fda283e9e31d9d9cff SHA-1: 7d099b1f0cd5a5ed9717771af56273415762643f SHA-256: 864edbe60796b59b2502fa2f5834e2c9b34867f59d4155174f1a3e975fbef5a1
92 Risk Score

Malware Insights

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

The PDF file contains a large number of SEO-optimized links to other PDF files hosted on various domains, indicating a link farm or redirection scheme. The document body text and embedded URLs suggest a lure related to 'Blu ray 4k player' to entice users to click on these links. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://dancinggoatsanctuary.com/uploads/1/3/0/6/130621475/130621475.html#blu+ray+4k+player
    • http://clippiheadren.com/uploads/1/3/0/6/130604299/wapokifebotini-mufakemofemefaf-zarod.pdf
    • http://prurigoguideline.org/uploads/1/3/0/6/130621201/8978654.pdf
    • http://bc-general-contractors.com/uploads/1/3/0/4/130488365/8333307.pdf
    • http://trailfoods.com/uploads/1/3/0/4/130489001/voletazevixatapu.pdf
    • http://pitsfordconsulting.com/uploads/1/3/0/4/130488847/a34ad2ac.pdf
    • http://juliamcourtney.com/uploads/1/3/0/4/130488114/romumijin.pdf
    • http://cartwrightgains.com/uploads/1/3/0/8/130813606/bedaa576fbc3.pdf
    • http://healthylabradorpuppies.com/uploads/1/3/0/9/130969834/negetigelig.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f9b.bin
196fa04cfe446364b1537c4d4a9810ea7daeb6411e3505c930e05ddef648441e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9B 7948 bytes

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