Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17b7bbd18271f08…

MALICIOUS

PDF

37.2 KB Created: 2020-03-29 10:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: afa9934ebb0e5406287bc4ea6f4a69f3 SHA-1: eaab7de2794960b743e9e9d7fb7cfccafa7ac1b4 SHA-256: e17b7bbd18271f08c74c2eb3ca2bdbccfbbbe9034e3a7341b58962e216fa2a87
92 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to SEO-optimized PDF files hosted on various domains. This pattern is indicative of a link farm designed to distribute malicious content or redirect users to phishing sites. The ML classifier strongly supports the malicious nature of this PDF.

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://74-123-76-231.mgwnet.com/uploads/1/3/0/4/130478566/130478566.html#create+database+table+mysql+command+line
    • http://fullcircleprojectsinc.org/uploads/1/3/0/6/130621771/8318087.pdf
    • http://reiddoyle.com/uploads/1/3/0/2/130272600/zinupivibew-xefud-vawixi.pdf
    • http://www.eliashercilio.com/uploads/1/3/0/6/130640190/d4c465d77.pdf
    • http://www.mikejones-uk.co.uk/uploads/1/3/0/5/130550770/podupowolodasefejet.pdf
    • http://agehomeworkspot.com/uploads/1/3/0/7/130738578/lavetiwekufarelos.pdf
    • http://michaelmangano.com/uploads/1/3/0/5/130588603/8069879.pdf
    • http://www.gaffneygritacademy.com/uploads/1/3/0/2/130270900/355a199566e.pdf
    • http://mountainmotoadventures.com/uploads/1/3/0/6/130640126/964bcd3b8.pdf
    • http://triplejumphomes.org/uploads/1/3/0/7/130739570/pexarekibumel.pdf
    • http://terriblepolitics.org/uploads/1/3/0/6/130622059/konagesigaporemewan.pdf
    • http://www.pantheraleollc.com/uploads/1/3/0/2/130271097/jujapumez.pdf
    • http://mfgm.de/uploads/1/3/0/4/130483349/sowajeluki-kubonover-lisatikovusuk.pdf
    • http://cvillelogo.com/uploads/1/3/0/7/130739288/saxomowusawoj.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_off00006657.bin
c2d734d5f6ea0fff3027d166748b0af607f78af1bfaa014309e1e88f35c4e7b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6657 8136 bytes

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